251364 has 12 divisors (see below), whose sum is σ = 586544. Its totient is φ = 83784.

The previous prime is 251359. The next prime is 251387. The reversal of 251364 is 463152.

It is a happy number.

251364 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 251364.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 251364.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10462 + ... + 10485.

2²⁵¹³⁶⁴ is an apocalyptic number.

It is an amenable number.

251364 is an abundant number, since it is smaller than the sum of its proper divisors (335180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251364 is a wasteful number, since it uses less digits than its factorization.

251364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20954 (or 20952 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 251364 is about 501.3621445622. The cubic root of 251364 is about 63.1104135823.

The spelling of 251364 in words is "two hundred fifty-one thousand, three hundred sixty-four".