252218655 has 48 divisors (see below), whose sum is σ = 487075680. Its totient is φ = 119879424.

The previous prime is 252218641. The next prime is 252218669. The reversal of 252218655 is 556812252.

It is a happy number.

252218655 is a `hidden beast` number, since 2 + 522 + 1 + 86 + 55 = 666.

252218655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252218641) and next prime (252218669).

It is not a de Polignac number, because 252218655 - 2⁸ = 252218399 is a prime.

It is a super-2 number, since 2×252218655² = 127228499860018050, 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 47 ways as a sum of consecutive naturals, for example, 9532 + ... + 24398.

It is an arithmetic number, because the mean of its divisors is an integer number (10147410).

Almost surely, 2^252218655 is an apocalyptic number.

252218655 is a deficient number, since it is larger than the sum of its proper divisors (234857025).

252218655 is a wasteful number, since it uses less digits than its factorization.

252218655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14920 (or 14917 counting only the distinct ones).

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

The square root of 252218655 is about 15881.3933582668. The cubic root of 252218655 is about 631.8185926160.

The spelling of 252218655 in words is "two hundred fifty-two million, two hundred eighteen thousand, six hundred fifty-five".