522612216 has 64 divisors (see below), whose sum is σ = 1659091200. Its totient is φ = 149317344.

The previous prime is 522612197. The next prime is 522612217. The reversal of 522612216 is 612216225.

522612216 is a `hidden beast` number, since 5 + 22 + 612 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 522612216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522612217) 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, 171310 + ... + 174333.

It is an arithmetic number, because the mean of its divisors is an integer number (25923300).

Almost surely, 2^522612216 is an apocalyptic number.

522612216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

522612216 is an abundant number, since it is smaller than the sum of its proper divisors (1136478984).

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

522612216 is a wasteful number, since it uses less digits than its factorization.

522612216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345665 (or 345655 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 522612216 is about 22860.7133746959. The cubic root of 522612216 is about 805.4894422081.

The spelling of 522612216 in words is "five hundred twenty-two million, six hundred twelve thousand, two hundred sixteen".