252138858 has 16 divisors (see below), whose sum is σ = 505598976. Its totient is φ = 83826080.

The previous prime is 252138851. The next prime is 252138871. The reversal of 252138858 is 858831252.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252138851) 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, 52563 + ... + 57158.

It is an arithmetic number, because the mean of its divisors is an integer number (31599936).

Almost surely, 2^252138858 is an apocalyptic number.

252138858 is an abundant number, since it is smaller than the sum of its proper divisors (253460118).

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

252138858 is a wasteful number, since it uses less digits than its factorization.

252138858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110109.

The product of its digits is 153600, while the sum is 42.

The square root of 252138858 is about 15878.8808799613. The cubic root of 252138858 is about 631.7519539473.

The spelling of 252138858 in words is "two hundred fifty-two million, one hundred thirty-eight thousand, eight hundred fifty-eight".