252215658 has 48 divisors (see below), whose sum is σ = 559597896. Its totient is φ = 82068480.

The previous prime is 252215651. The next prime is 252215699. The reversal of 252215658 is 856512252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 235837449 + 16378209 = 15357^2 + 4047^2 .

It is a super-2 number, since 2×252215658² = 127225476280745928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252215651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229366 + ... + 230462.

Almost surely, 2^252215658 is an apocalyptic number.

252215658 is an abundant number, since it is smaller than the sum of its proper divisors (307382238).

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

252215658 is a wasteful number, since it uses less digits than its factorization.

252215658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1396 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 252215658 is about 15881.2990022857. The cubic root of 252215658 is about 631.8160900681.

The spelling of 252215658 in words is "two hundred fifty-two million, two hundred fifteen thousand, six hundred fifty-eight".