520508 has 6 divisors (see below), whose sum is σ = 910896. Its totient is φ = 260252.

The previous prime is 520451. The next prime is 520529. The reversal of 520508 is 805025.

It is a self number, because there is not a number n which added to its sum of digits gives 520508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65060 + ... + 65067.

It is an arithmetic number, because the mean of its divisors is an integer number (151816).

2⁵²⁰⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

520508 is a deficient number, since it is larger than the sum of its proper divisors (390388).

520508 is a wasteful number, since it uses less digits than its factorization.

520508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130131 (or 130129 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 520508 is about 721.4624037329. The cubic root of 520508 is about 80.4406929143.

The spelling of 520508 in words is "five hundred twenty thousand, five hundred eight".