520808157597 has 96 divisors (see below), whose sum is σ = 941230983168. Its totient is φ = 248937017472.

The previous prime is 520808157547. The next prime is 520808157607. The reversal of 520808157597 is 795751808025.

It is not a de Polignac number, because 520808157597 - 2¹⁸ = 520807895453 is a prime.

It is a super-2 number, since 2×520808157597² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520808157547) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2151838 + ... + 2381600.

It is an arithmetic number, because the mean of its divisors is an integer number (9804489408).

Almost surely, 2^520808157597 is an apocalyptic number.

520808157597 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

520808157597 is a deficient number, since it is larger than the sum of its proper divisors (420422825571).

520808157597 is a wasteful number, since it uses less digits than its factorization.

520808157597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229847 (or 229828 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 57.

The spelling of 520808157597 in words is "five hundred twenty billion, eight hundred eight million, one hundred fifty-seven thousand, five hundred ninety-seven".