252874557 has 24 divisors (see below), whose sum is σ = 395566808. Its totient is φ = 154742400.

The previous prime is 252874547. The next prime is 252874561. The reversal of 252874557 is 755478252.

252874557 is a `hidden beast` number, since 2 + 5 + 28 + 74 + 557 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17589636 + 235284921 = 4194^2 + 15339^2 .

It is not a de Polignac number, because 252874557 - 2⁶ = 252874493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252874547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15207 + ... + 27147.

Almost surely, 2^252874557 is an apocalyptic number.

It is an amenable number.

252874557 is a deficient number, since it is larger than the sum of its proper divisors (142692251).

252874557 is a wasteful number, since it uses less digits than its factorization.

252874557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12141 (or 12138 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 252874557 is about 15902.0299647561. The cubic root of 252874557 is about 632.3658061271.

The spelling of 252874557 in words is "two hundred fifty-two million, eight hundred seventy-four thousand, five hundred fifty-seven".