252651770 has 32 divisors (see below), whose sum is σ = 537667200. Its totient is φ = 83635776.

The previous prime is 252651761. The next prime is 252651811. The reversal of 252651770 is 77156252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 252651770.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60200 + ... + 64259.

It is an arithmetic number, because the mean of its divisors is an integer number (16802100).

Almost surely, 2^252651770 is an apocalyptic number.

252651770 is an abundant number, since it is smaller than the sum of its proper divisors (285015430).

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

252651770 is a wasteful number, since it uses less digits than its factorization.

252651770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124502.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 252651770 is about 15895.0234350252. The cubic root of 252651770 is about 632.1800430406.

The spelling of 252651770 in words is "two hundred fifty-two million, six hundred fifty-one thousand, seven hundred seventy".