252651222 has 24 divisors (see below), whose sum is σ = 547863264. Its totient is φ = 84147504.

The previous prime is 252651211. The next prime is 252651233. The reversal of 252651222 is 222156252.

252651222 is a `hidden beast` number, since 2 + 5 + 2 + 651 + 2 + 2 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (252651211) and next prime (252651233).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19603 + ... + 29825.

It is an arithmetic number, because the mean of its divisors is an integer number (22827636).

Almost surely, 2^252651222 is an apocalyptic number.

252651222 is an abundant number, since it is smaller than the sum of its proper divisors (295212042).

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

252651222 is a wasteful number, since it uses less digits than its factorization.

252651222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11604 (or 11601 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 252651222 is about 15895.0061969161. The cubic root of 252651222 is about 632.1795859755.

The spelling of 252651222 in words is "two hundred fifty-two million, six hundred fifty-one thousand, two hundred twenty-two".