252157858 has 16 divisors (see below), whose sum is σ = 385200000. Its totient is φ = 123764112.

The previous prime is 252157853. The next prime is 252157859. The reversal of 252157858 is 858751252.

It is a super-2 number, since 2×252157858² = 127167170702296328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252157853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125143 + ... + 127141.

It is an arithmetic number, because the mean of its divisors is an integer number (24075000).

Almost surely, 2^252157858 is an apocalyptic number.

252157858 is a deficient number, since it is larger than the sum of its proper divisors (133042142).

252157858 is a wasteful number, since it uses less digits than its factorization.

252157858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129.

The product of its digits is 224000, while the sum is 43.

The square root of 252157858 is about 15879.4791476295. The cubic root of 252157858 is about 631.7678221687.

The spelling of 252157858 in words is "two hundred fifty-two million, one hundred fifty-seven thousand, eight hundred fifty-eight".