55521560600556 has 48 divisors (see below), whose sum is σ = 131191956618240. Its totient is φ = 18272671971840.

The previous prime is 55521560600549. The next prime is 55521560600567. The reversal of 55521560600556 is 65500606512555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55521560600499 and 55521560600508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78065505 + ... + 78773511.

It is an arithmetic number, because the mean of its divisors is an integer number (2733165762880).

Almost surely, 2^{55521560600556} is an apocalyptic number.

It is an amenable number.

55521560600556 is an abundant number, since it is smaller than the sum of its proper divisors (75670396017684).

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

55521560600556 is a wasteful number, since it uses less digits than its factorization.

55521560600556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790814 (or 790812 counting only the distinct ones).

The product of its (nonzero) digits is 6750000, while the sum is 51.

The spelling of 55521560600556 in words is "fifty-five trillion, five hundred twenty-one billion, five hundred sixty million, six hundred thousand, five hundred fifty-six".