520516 has 12 divisors (see below), whose sum is σ = 935788. Its totient is φ = 253152.

The previous prime is 520451. The next prime is 520529. The reversal of 520516 is 615025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 484416 + 36100 = 696^2 + 190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 520493 and 520502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611 + ... + 1906.

2⁵²⁰⁵¹⁶ is an apocalyptic number.

It is an amenable number.

520516 is a deficient number, since it is larger than the sum of its proper divisors (415272).

520516 is a wasteful number, since it uses less digits than its factorization.

520516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558 (or 3556 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 520516 is about 721.4679480060. The cubic root of 520516 is about 80.4411050259.

The spelling of 520516 in words is "five hundred twenty thousand, five hundred sixteen".