515564 has 12 divisors (see below), whose sum is σ = 1031184. Its totient is φ = 220944.

The previous prime is 515563. The next prime is 515579. The reversal of 515564 is 465515.

515564 is an admirable number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (515563) 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, 9179 + ... + 9234.

It is an arithmetic number, because the mean of its divisors is an integer number (85932).

2⁵¹⁵⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

515564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

515564 is a wasteful number, since it uses less digits than its factorization.

515564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18424 (or 18422 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 515564 is about 718.0278546129. The cubic root of 515564 is about 80.1851959499.

The spelling of 515564 in words is "five hundred fifteen thousand, five hundred sixty-four".