520713507 has 16 divisors (see below), whose sum is σ = 707454720. Its totient is φ = 340586400.

The previous prime is 520713497. The next prime is 520713511. The reversal of 520713507 is 705317025.

It is not a de Polignac number, because 520713507 - 2²³ = 512324899 is a prime.

It is a super-2 number, since 2×520713507² = 542285112744478098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520713577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73282 + ... + 80072.

It is an arithmetic number, because the mean of its divisors is an integer number (44215920).

Almost surely, 2^520713507 is an apocalyptic number.

520713507 is a deficient number, since it is larger than the sum of its proper divisors (186741213).

520713507 is a wasteful number, since it uses less digits than its factorization.

520713507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 520713507 is about 22819.1478149382. The cubic root of 520713507 is about 804.5127805441.

The spelling of 520713507 in words is "five hundred twenty million, seven hundred thirteen thousand, five hundred seven".