520533013 has 64 divisors (see below), whose sum is σ = 748500480. Its totient is φ = 350438400.

The previous prime is 520533011. The next prime is 520533043. The reversal of 520533013 is 310335025.

It is a happy number.

It is not a de Polignac number, because 520533013 - 2¹ = 520533011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520533011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2875783 + ... + 2875963.

It is an arithmetic number, because the mean of its divisors is an integer number (11695320).

Almost surely, 2^520533013 is an apocalyptic number.

It is an amenable number.

520533013 is a deficient number, since it is larger than the sum of its proper divisors (227967467).

520533013 is a wasteful number, since it uses less digits than its factorization.

520533013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 520533013 is about 22815.1925917797. The cubic root of 520533013 is about 804.4198141886.

Adding to 520533013 its reverse (310335025), we get a palindrome (830868038).

The spelling of 520533013 in words is "five hundred twenty million, five hundred thirty-three thousand, thirteen".