165 (number)

	[[{{#expr: (floor({{{number}}} div {{{factor}}})) * {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}}}}]] [[{{#expr: (floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}{{{factor}}} div 10)}} (number)\|{{#switch:{{{1}}}\|-1={{#ifexpr:(floor({{{number}}} div 10)) = 0\|-1\|←}}\|10=→\|#default={{#expr:(floor({{{number}}} div {{{factor}}})) {{{factor}}}+({{{1}}}*{{{factor}}} div 10)}}}}]] List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred sixty-five
Ordinal	165th; (one hundred sixty-fifth)
Factorization	3 × 5 × 11
Divisors	1, 3, 5, 11, 15, 33, 55, 165
Greek numeral	ΡΞΕ´
Roman numeral	CLXV
Binary	101001012
Ternary	200103
Quaternary	22114
Quinary	11305
Senary	4336
Octal	2458
Duodecimal	11912
Hexadecimal	A516
Vigesimal	8520
Base 36	4L36

165 (one hundred [and] sixty-five) is the natural number following 164 and preceding 166.

In mathematics

165 is:

an odd number, a composite number, and a deficient number.
a sphenic number.
a tetrahedral number^[1]
the sum of the sums of the divisors of the first 14 positive integers.^[2]
a self number in base 10.
a palindromic number in binary (10100101₂) and bases 14 (BB₁₄), 32 (55₃₂) and 54 (33₅₄).
a unique period in base 2.

In astronomy

165 Loreley is a large Main belt asteroid
165P/LINEAR is a periodic comet in our solar system

In the military

Caproni Ca.165 Italian fighter aircraft developed before World War II
USNS American Explorer (T-AOT-165) was a United States Navy tanker, part of the U.S. Reserve Fleet, Beaumont, Texas
USS Bonita (SS-165) was a United States Navy Barracuda-class submarine during World War II
USS Bullock (AK-165) was a United States Navy Alamosa-class cargo ship during World War II
USS Counsel (AM-165) was a United States Navy Admirable-class minesweeper during World War II
USS Counsel (AM-165) was a United States Navy Haskell-class attack transport during World War II
USS Flicker (IX-165) was a United States Navy minesweeper during World War II
USS Georgetown (AG-165) was a United States Navy Oxford-class technical research ship following World War II
USS Meredith (DD-165) was a United States Navy Wickes-class destroyer during World War I
USS Parks (DE-165) was a United States Navy Cannon-class destroyer escort during World War II
USS Prince Georges (AP-165) was a United States Navy Crater-class transport and cargo ship during World War II
USS Wenonah (SP-165) was a United States Navy yacht during World War I
The 165 Squadron, Republic of Singapore Air Force Air Defence Operations Command, Republic of Singapore Air Force

In transportation

British Rail Class 165
The Blériot 165 was a French four-engine biplane airliner of the 1920s
The Cessna 165 single-engine plane of the 1930s
LOT Polish Airlines Flight 165, en route from Warsaw to Cracow Balice airport crashed during a snowstorm on April 2, 1969

In other fields

165 is also:

The year AD 165 or 165 BC
165 AH is a year in the Islamic calendar that corresponds to 781 – 782 CE
The atomic number of an element temporarily called Unhexpentium
G.165 is a Telecommunication Standardization Sector standard for echo cancellers, used in telephony
The human gene Zinc finger protein 165, or ZNF165

References

↑ "Sloane's A000292 : Tetrahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
↑ Sloane, N.J.A. (ed.). "Sequence A024916 (sum_{k=1..n} sigma(k) where sigma(n) = sum of divisors of n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.

External links

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[1] "Sloane's A000292 : Tetrahedral numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.

[2] Sloane, N.J.A. (ed.). "Sequence A024916 (sum_{k=1..n} sigma(k) where sigma(n) = sum of divisors of n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.