520735117 has 16 divisors (see below), whose sum is σ = 628621312. Its totient is φ = 421893360.

The previous prime is 520735099. The next prime is 520735141. The reversal of 520735117 is 711537025.

It is not a de Polignac number, because 520735117 - 2⁷ = 520734989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520735217) 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, 18573 + ... + 37234.

It is an arithmetic number, because the mean of its divisors is an integer number (39288832).

Almost surely, 2^520735117 is an apocalyptic number.

It is an amenable number.

520735117 is a deficient number, since it is larger than the sum of its proper divisors (107886195).

520735117 is a wasteful number, since it uses less digits than its factorization.

520735117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55888.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 520735117 is about 22819.6213158764. The cubic root of 520735117 is about 804.5239096841.

The spelling of 520735117 in words is "five hundred twenty million, seven hundred thirty-five thousand, one hundred seventeen".