Английская Википедия:54 (number)
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Шаблон:Infobox number Шаблон:Wiktionary 54 (fifty-four) is the natural number following 53 and preceding 55.
In mathematics
- 54 is an abundant number and a semiperfect number, like all other multiples of 6.[1]
- It is twice the third power of three, 3Шаблон:Sup + 3Шаблон:Sup = 54, and hence is a Leyland number.[2]
- 54 is the smallest number that can be written as the sum of three positive squares in more than two different ways: Шаблон:Nowrap = Шаблон:Nowrap = Шаблон:Nowrap = 54.[3][4]
- It is a 19-gonal number,[5]
- In base 10, 54 is a Harshad number.[6]
- The Holt graph has 54 edges.
- The sine of an angle of 54 degrees is half the golden ratio.
- The number of primes ≤ 28.[7]
- A Lehmer-Comtet number.[8]
- 54 is the only non-trivial Neon Number in Power 9: 549 = 3,904,305,912,313,344; 3 + 9 + 0 + 4 + 3 + 0 + 5 + 9 + 1 + 2 + 3 + 1 + 3 + 3 + 4 + 4 = 54
In science
- The atomic number of xenon is 54.
Astronomy
- Messier object M54, a magnitude 8.5 globular cluster in the constellation Sagittarius
- The New General Catalogue object NGC 54, a spiral galaxy in the constellation Cetus
- The number of years in three Saros cycles of eclipses of the sun and moon is known as a Triple Saros or exeligmos (Greek: "turn of the wheel").
In sports
- Fewest points in an NBA playoff game: Chicago (96), Utah (54), June 7, 1998
- The New York Rangers won the Stanley Cup in 1994, 54 years after their previous Cup win. It is the longest drought in the trophy's history.
- For years car number 54 was driven by NASCAR's Lennie Pond. More recently, it is known as the Nationwide Series car number for Kyle Busch.
- A score of 54 on a par 72 course in golf is colloquially referred to as a perfect round. This score has never been achieved in competition.
- The number used when a player is defeated 3 games in a row in racquetball.
In other fields
54 is also:
- +54 The code for international direct dial phone calls to Argentina
- A broadcast television channel number
- 54, a 1998 film about Studio 54 starring Ryan Phillippe, Mike Myers, and Salma Hayek
- 54, a novel by the Wu Ming collective of authors
- In the title of a 1960s television show Car 54, Where Are You?
- The number of the French department Meurthe-et-Moselle
- New York's Warwick New York Hotel is on West 54th Street
- The number of cards in a deck of playing cards, if two jokers are included
- The number of countries in Africa
- Year identifier used on motor vehicles registered in the UK between 1 September 2004 and 28 February 2005
- Six by nine, the incorrect Answer to the Ultimate Question of Life, the Universe, and Everything
See also
References
Шаблон:Reflist Шаблон:Integers
