252215788 has 18 divisors (see below), whose sum is σ = 485151548. Its totient is φ = 114643320.

The previous prime is 252215779. The next prime is 252215797. The reversal of 252215788 is 887512252.

252215788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252215779) and next prime (252215797).

It is a super-2 number, since 2×252215788² = 127225607432921888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252215788.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260070 + ... + 261037.

Almost surely, 2^252215788 is an apocalyptic number.

It is an amenable number.

252215788 is a deficient number, since it is larger than the sum of its proper divisors (232935760).

252215788 is a wasteful number, since it uses less digits than its factorization.

252215788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521133 (or 521120 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 252215788 is about 15881.3030951493. The cubic root of 252215788 is about 631.8161986208.

The spelling of 252215788 in words is "two hundred fifty-two million, two hundred fifteen thousand, seven hundred eighty-eight".