252557490 has 32 divisors (see below), whose sum is σ = 620237376. Its totient is φ = 65782080.

The previous prime is 252557471. The next prime is 252557497. The reversal of 252557490 is 94755252.

It is not an unprimeable number, because it can be changed into a prime (252557497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96601 + ... + 99180.

It is an arithmetic number, because the mean of its divisors is an integer number (19382418).

Almost surely, 2^252557490 is an apocalyptic number.

252557490 is an abundant number, since it is smaller than the sum of its proper divisors (367679886).

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

252557490 is a wasteful number, since it uses less digits than its factorization.

252557490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195834.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 252557490 is about 15892.0574501856. The cubic root of 252557490 is about 632.1013981008.

The spelling of 252557490 in words is "two hundred fifty-two million, five hundred fifty-seven thousand, four hundred ninety".