56515510028 has 12 divisors (see below), whose sum is σ = 99921752952. Its totient is φ = 27966437760.

The previous prime is 56515510019. The next prime is 56515510033. The reversal of 56515510028 is 82001551565.

It is a junction number, because it is equal to n+sod(n) for n = 56515509973 and 56515510000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72828878 + ... + 72829653.

It is an arithmetic number, because the mean of its divisors is an integer number (8326812746).

Almost surely, 2^56515510028 is an apocalyptic number.

It is an amenable number.

56515510028 is a deficient number, since it is larger than the sum of its proper divisors (43406242924).

56515510028 is a wasteful number, since it uses less digits than its factorization.

56515510028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145658632 (or 145658630 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 38.

The spelling of 56515510028 in words is "fifty-six billion, five hundred fifteen million, five hundred ten thousand, twenty-eight".