520564 has 12 divisors (see below), whose sum is σ = 993888. Its totient is φ = 236600.

The previous prime is 520549. The next prime is 520567. The reversal of 520564 is 465025.

520564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5872 + ... + 5959.

It is an arithmetic number, because the mean of its divisors is an integer number (82824).

2⁵²⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

520564 is a deficient number, since it is larger than the sum of its proper divisors (473324).

520564 is a wasteful number, since it uses less digits than its factorization.

520564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520564 is about 721.5012127502. The cubic root of 520564 is about 80.4435776072.

Adding to 520564 its reverse (465025), we get a palindrome (985589).

The spelling of 520564 in words is "five hundred twenty thousand, five hundred sixty-four".