215522652 has 24 divisors (see below), whose sum is σ = 510393856. Its totient is φ = 70768368.

The previous prime is 215522647. The next prime is 215522677. The reversal of 215522652 is 256225512.

It is a super-2 number, since 2×215522652² = 92900027050226208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133228 + ... + 134835.

Almost surely, 2^215522652 is an apocalyptic number.

It is an amenable number.

215522652 is an abundant number, since it is smaller than the sum of its proper divisors (294871204).

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

215522652 is a wasteful number, since it uses less digits than its factorization.

215522652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268137 (or 268135 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 215522652 is about 14680.6897658114. The cubic root of 215522652 is about 599.5576851205.

The spelling of 215522652 in words is "two hundred fifteen million, five hundred twenty-two thousand, six hundred fifty-two".