522456 has 32 divisors (see below), whose sum is σ = 1425600. Its totient is φ = 158240.

The previous prime is 522449. The next prime is 522469. The reversal of 522456 is 654225.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 5⁴ + 2⁶ + 4³ + 2¹⁷ + 5⁸ + 6 .

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, 726 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (44550).

2⁵²²⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

522456 is an abundant number, since it is smaller than the sum of its proper divisors (903144).

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

522456 is a wasteful number, since it uses less digits than its factorization.

522456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1995 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 522456 is about 722.8111786629. The cubic root of 522456 is about 80.5409176908.

Subtracting 522456 from its reverse (654225), we obtain a square (131769 = 363²).

The spelling of 522456 in words is "five hundred twenty-two thousand, four hundred fifty-six".