515566056 has 16 divisors (see below), whose sum is σ = 1288915200. Its totient is φ = 171855344.

The previous prime is 515566049. The next prime is 515566057. The reversal of 515566056 is 650665515.

It is not an unprimeable number, because it can be changed into a prime (515566057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10740936 + ... + 10740983.

It is an arithmetic number, because the mean of its divisors is an integer number (80557200).

Almost surely, 2^515566056 is an apocalyptic number.

It is an amenable number.

515566056 is an abundant number, since it is smaller than the sum of its proper divisors (773349144).

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

515566056 is a wasteful number, since it uses less digits than its factorization.

515566056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21481928 (or 21481924 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 515566056 is about 22706.0797144729. The cubic root of 515566056 is about 801.8530253905.

The spelling of 515566056 in words is "five hundred fifteen million, five hundred sixty-six thousand, fifty-six".