520390524 has 24 divisors (see below), whose sum is σ = 1231348608. Its totient is φ = 171020080.

The previous prime is 520390523. The next prime is 520390543. The reversal of 520390524 is 425093025.

It is a junction number, because it is equal to n+sod(n) for n = 520390491 and 520390500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520390523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304542 + ... + 306245.

It is an arithmetic number, because the mean of its divisors is an integer number (51306192).

Almost surely, 2^520390524 is an apocalyptic number.

It is an amenable number.

520390524 is an abundant number, since it is smaller than the sum of its proper divisors (710958084).

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

520390524 is a wasteful number, since it uses less digits than its factorization.

520390524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610865 (or 610863 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 520390524 is about 22812.0697000513. The cubic root of 520390524 is about 804.3464077428.

The spelling of 520390524 in words is "five hundred twenty million, three hundred ninety thousand, five hundred twenty-four".