252215312 has 10 divisors (see below), whose sum is σ = 488667198. Its totient is φ = 126107648.

The previous prime is 252215311. The next prime is 252215317. The reversal of 252215312 is 213512252.

It can be written as a sum of positive squares in only one way, i.e., 141039376 + 111175936 = 11876^2 + 10544^2 .

It is a super-2 number, since 2×252215312² = 127225127214514688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252215311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7881713 + ... + 7881744.

Almost surely, 2^252215312 is an apocalyptic number.

It is an amenable number.

252215312 is a deficient number, since it is larger than the sum of its proper divisors (236451886).

252215312 is a wasteful number, since it uses less digits than its factorization.

252215312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15763465 (or 15763459 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 252215312 is about 15881.2881089665. The cubic root of 252215312 is about 631.8158011507.

Adding to 252215312 its reverse (213512252), we get a palindrome (465727564).

The spelling of 252215312 in words is "two hundred fifty-two million, two hundred fifteen thousand, three hundred twelve".