215583252 has 48 divisors (see below), whose sum is σ = 519583680. Its totient is φ = 69527808.

The previous prime is 215583241. The next prime is 215583257. The reversal of 215583252 is 252385512.

It is a super-2 number, since 2×215583252² = 92952277085791008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215583257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54328 + ... + 58160.

It is an arithmetic number, because the mean of its divisors is an integer number (10824660).

Almost surely, 2^215583252 is an apocalyptic number.

It is an amenable number.

215583252 is an abundant number, since it is smaller than the sum of its proper divisors (304000428).

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

215583252 is a wasteful number, since it uses less digits than its factorization.

215583252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992 (or 3990 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 215583252 is about 14682.7535564689. The cubic root of 215583252 is about 599.6138737864.

The spelling of 215583252 in words is "two hundred fifteen million, five hundred eighty-three thousand, two hundred fifty-two".