252216512 has 28 divisors (see below), whose sum is σ = 505364496. Its totient is φ = 124880640.

The previous prime is 252216491. The next prime is 252216521. The reversal of 252216512 is 215612252.

It is a super-2 number, since 2×252216512² = 127226337850892288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12539 + ... + 25722.

It is an arithmetic number, because the mean of its divisors is an integer number (18048732).

Almost surely, 2^252216512 is an apocalyptic number.

It is an amenable number.

252216512 is an abundant number, since it is smaller than the sum of its proper divisors (253147984).

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

252216512 is a wasteful number, since it uses less digits than its factorization.

252216512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38376 (or 38366 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 252216512 is about 15881.3258892323. The cubic root of 252216512 is about 631.8168031752.

Adding to 252216512 its reverse (215612252), we get a palindrome (467828764).

The spelling of 252216512 in words is "two hundred fifty-two million, two hundred sixteen thousand, five hundred twelve".