252057870 has 24 divisors (see below), whose sum is σ = 655350696. Its totient is φ = 67215408.

The previous prime is 252057863. The next prime is 252057887. The reversal of 252057870 is 78750252.

252057870 is a `hidden beast` number, since 2 + 520 + 57 + 87 + 0 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400232 + ... + 1400411.

It is an arithmetic number, because the mean of its divisors is an integer number (27306279).

Almost surely, 2^252057870 is an apocalyptic number.

252057870 is an abundant number, since it is smaller than the sum of its proper divisors (403292826).

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

252057870 is a wasteful number, since it uses less digits than its factorization.

252057870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800656 (or 2800653 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 252057870 is about 15876.3304954262. The cubic root of 252057870 is about 631.6843062938.

The spelling of 252057870 in words is "two hundred fifty-two million, fifty-seven thousand, eight hundred seventy".