252664971 has 24 divisors (see below), whose sum is σ = 374681520. Its totient is φ = 151272576.

The previous prime is 252664969. The next prime is 252664987. The reversal of 252664971 is 179466252.

It is not a de Polignac number, because 252664971 - 2¹ = 252664969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252664471) 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, 12025 + ... + 25493.

It is an arithmetic number, because the mean of its divisors is an integer number (15611730).

Almost surely, 2^252664971 is an apocalyptic number.

252664971 is a deficient number, since it is larger than the sum of its proper divisors (122016549).

252664971 is a wasteful number, since it uses less digits than its factorization.

252664971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13535 (or 13522 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 252664971 is about 15895.4386853588. The cubic root of 252664971 is about 632.1910532721.

The spelling of 252664971 in words is "two hundred fifty-two million, six hundred sixty-four thousand, nine hundred seventy-one".