5215808520 has 96 divisors (see below), whose sum is σ = 18255346200. Its totient is φ = 1283890176.

The previous prime is 5215808513. The next prime is 5215808557. The reversal of 5215808520 is 258085125.

5215808520 is a `hidden beast` number, since 5 + 21 + 580 + 8 + 52 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4168768356 + 1047040164 = 64566^2 + 32358^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552565 + ... + 561924.

Almost surely, 2^5215808520 is an apocalyptic number.

It is an amenable number.

5215808520 is an abundant number, since it is smaller than the sum of its proper divisors (13039537680).

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

5215808520 is a wasteful number, since it uses less digits than its factorization.

5215808520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114519 (or 1114512 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 5215808520 is about 72220.5546918604. The cubic root of 5215808520 is about 1734.2320702473.

The spelling of 5215808520 in words is "five billion, two hundred fifteen million, eight hundred eight thousand, five hundred twenty".