522864 has 30 divisors (see below), whose sum is σ = 1463696. Its totient is φ = 174240.

The previous prime is 522857. The next prime is 522871. The reversal of 522864 is 468225.

It is an interprime number because it is at equal distance from previous prime (522857) and next prime (522871).

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

It is an Ulam number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1672 + ... + 1959.

2⁵²²⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

522864 is an abundant number, since it is smaller than the sum of its proper divisors (940832).

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

522864 is a wasteful number, since it uses less digits than its factorization.

522864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645 (or 3636 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 522864 is about 723.0933549688. The cubic root of 522864 is about 80.5618777616.

It can be divided in two parts, 52 and 2864, that added together give a square (2916 = 54²).

The spelling of 522864 in words is "five hundred twenty-two thousand, eight hundred sixty-four".