520085 has 16 divisors (see below), whose sum is σ = 665280. Its totient is φ = 389760.

The previous prime is 520073. The next prime is 520103. The reversal of 520085 is 580025.

It is not a de Polignac number, because 520085 - 2⁶ = 520021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8786 + ... + 8844.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2⁵²⁰⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

520085 is a deficient number, since it is larger than the sum of its proper divisors (145195).

520085 is a wasteful number, since it uses less digits than its factorization.

520085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148.

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

The square root of 520085 is about 721.1691895804. The cubic root of 520085 is about 80.4188964932.

The spelling of 520085 in words is "five hundred twenty thousand, eighty-five".