252562991 has 16 divisors (see below), whose sum is σ = 271088640. Its totient is φ = 234601920.

The previous prime is 252562969. The next prime is 252563021. The reversal of 252562991 is 199265252.

It is a cyclic number.

It is not a de Polignac number, because 252562991 - 2⁶ = 252562927 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252532991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292226 + ... + 293088.

It is an arithmetic number, because the mean of its divisors is an integer number (16943040).

Almost surely, 2^252562991 is an apocalyptic number.

252562991 is a deficient number, since it is larger than the sum of its proper divisors (18525649).

252562991 is a wasteful number, since it uses less digits than its factorization.

252562991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its digits is 97200, while the sum is 41.

The square root of 252562991 is about 15892.2305231204. The cubic root of 252562991 is about 632.1059873722.

The spelling of 252562991 in words is "two hundred fifty-two million, five hundred sixty-two thousand, nine hundred ninety-one".