520557988 has 24 divisors (see below), whose sum is σ = 951390720. Its totient is φ = 248751360.

The previous prime is 520557977. The next prime is 520558001. The reversal of 520557988 is 889755025.

It is a super-3 number, since 3×520557988³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190093 + ... + 192811.

It is an arithmetic number, because the mean of its divisors is an integer number (39641280).

Almost surely, 2^520557988 is an apocalyptic number.

It is an amenable number.

520557988 is a deficient number, since it is larger than the sum of its proper divisors (430832732).

520557988 is a wasteful number, since it uses less digits than its factorization.

520557988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827 (or 4825 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 49.

The square root of 520557988 is about 22815.7399178725. The cubic root of 520557988 is about 804.4326792475.

The spelling of 520557988 in words is "five hundred twenty million, five hundred fifty-seven thousand, nine hundred eighty-eight".