252638817 has 8 divisors (see below), whose sum is σ = 337290624. Its totient is φ = 168206448.

The previous prime is 252638797. The next prime is 252638833. The reversal of 252638817 is 718836252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252638817 - 2⁷ = 252638689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252638857) 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, 52153 + ... + 56790.

It is an arithmetic number, because the mean of its divisors is an integer number (42161328).

Almost surely, 2^252638817 is an apocalyptic number.

It is an amenable number.

252638817 is a deficient number, since it is larger than the sum of its proper divisors (84651807).

252638817 is a wasteful number, since it uses less digits than its factorization.

252638817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109719.

The product of its digits is 161280, while the sum is 42.

The square root of 252638817 is about 15894.6159752288. The cubic root of 252638817 is about 632.1692392796.

The spelling of 252638817 in words is "two hundred fifty-two million, six hundred thirty-eight thousand, eight hundred seventeen".