52

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52
Cardinal fifty-two
Ordinal 52nd
(fifty-second)
Factorization  2^2 \cdot 13
Divisors 1, 2, 4, 13, 26, 52
Roman numeral LII
Binary 1101002
Octal 648
Duodecimal 4412
Hexadecimal 3416

52 (fifty-two) is the natural number following 51 and preceding 53.

Contents

In mathematics

Fifty-two is the 6th Bell number and a decagonal number. It is an untouchable number, since it is never the sum of proper divisors of any number, and it is a noncototient since it is never the answer to the equation x - φ(x).

In science

Astronomy

In other fields

The piano has 52 white keys

Fifty-two is:

Sports

Historical years

52 B.C., 52 A.D., 1952, 2052, etc.


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Mentioned in

Juliet (astronomy)
Vazquez (family name)
Doeg (in the Old Testament)