520115216 has 20 divisors (see below), whose sum is σ = 1034960172. Its totient is φ = 253028736.

The previous prime is 520115201. The next prime is 520115231. The reversal of 520115216 is 612511025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520115201) and next prime (520115231).

It can be written as a sum of positive squares in 2 ways, for example, as 190329616 + 329785600 = 13796^2 + 18160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 520115191 and 520115200.

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, 438695 + ... + 439878.

Almost surely, 2^520115216 is an apocalyptic number.

It is an amenable number.

520115216 is a deficient number, since it is larger than the sum of its proper divisors (514844956).

520115216 is a wasteful number, since it uses less digits than its factorization.

520115216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878618 (or 878612 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 520115216 is about 22806.0346399807. The cubic root of 520115216 is about 804.2045386062.

The spelling of 520115216 in words is "five hundred twenty million, one hundred fifteen thousand, two hundred sixteen".