54 (number)

← 53 54 55 →
← 50 51 52 53 54 55 56 57 58 59 → List of numbers; Integers; ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	fifty-four
Ordinal	54th; (fifty-fourth)
Factorization	2 × 33
Divisors	1, 2, 3, 6, 9, 18, 27, 54
Greek numeral	ΝΔ´
Roman numeral	LIV, liv
Binary	1101102
Ternary	20003
Senary	1306
Octal	668
Duodecimal	4612
Hexadecimal	3616
Eastern Arabic, Kurdish, Persian, Sindhi	٥٤
Assamese & Bengali	৫৪
Chinese numeral,; Japanese numeral	五十四
Devanāgarī	५४
Ge'ez	፶፬
Georgian	ნდ
Hebrew	נ"ד
Kannada	೫೪
Khmer	៥៤
Armenian	ԾԴ
Malayalam	൫൰൪
Meitei	꯵꯴
Thai	๕๔
Telugu	౫౪
Babylonian numeral	𒐐𒐘
Egyptian hieroglyph	𓎊𓏽
Mayan numeral	𝋢𝋮
Urdu numerals	۵۴
Tibetan numerals	༥༤
Financial kanji/hanja	五拾四, 伍拾肆
Morse code	........._
NATO phonetic alphabet	FIFE FOW-ER
ASCII value	6

54 (fifty-four) is the natural number and positive integer following 53 and preceding 55. As a multiple of 2 but not of 4, 54 is an oddly even number and a composite number.

54 is related to the golden ratio through trigonometry: the sine of a 54 degree angle is half of the golden ratio. Also, 54 is a regular number, and its even division of powers of 60 was useful to ancient mathematicians who used the Assyro-Babylonian mathematics system.

It is also an abundant number,^[1] since the sum of its proper divisors (66)^[2] is greater than itself.