520979 has 4 divisors (see below), whose sum is σ = 522984. Its totient is φ = 518976.

The previous prime is 520969. The next prime is 520981. The reversal of 520979 is 979025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520979 - 2⁴ = 520963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520969) 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, 542 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (130746).

2⁵²⁰⁹⁷⁹ is an apocalyptic number.

520979 is a deficient number, since it is larger than the sum of its proper divisors (2005).

520979 is a wasteful number, since it uses less digits than its factorization.

520979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 520979 is about 721.7887502587. The cubic root of 520979 is about 80.4649487977.

The spelling of 520979 in words is "five hundred twenty thousand, nine hundred seventy-nine".