520086 has 48 divisors (see below), whose sum is σ = 1272240. Its totient is φ = 141120.

The previous prime is 520073. The next prime is 520103. The reversal of 520086 is 680025.

It is a happy number.

It is a super-3 number, since 3×520086³ = 422033324215188168, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

520086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8496 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (26505).

2⁵²⁰⁰⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636120).

520086 is an abundant number, since it is smaller than the sum of its proper divisors (752154).

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

520086 is a wasteful number, since it uses less digits than its factorization.

520086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 520086 is about 721.1698828986. The cubic root of 520086 is about 80.4189480353.

The spelling of 520086 in words is "five hundred twenty thousand, eighty-six".