555555056 has 20 divisors (see below), whose sum is σ = 1230157872. Its totient is φ = 238094976.

The previous prime is 555555031. The next prime is 555555067. The reversal of 555555056 is 650555555.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480045 + ... + 2480268.

Almost surely, 2^555555056 is an apocalyptic number.

555555056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

555555056 is an abundant number, since it is smaller than the sum of its proper divisors (674602816).

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

555555056 is a wasteful number, since it uses less digits than its factorization.

555555056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960328 (or 4960322 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 41.

The square root of 555555056 is about 23570.2154423756. The cubic root of 555555056 is about 822.0704450414.

The spelling of 555555056 in words is "five hundred fifty-five million, five hundred fifty-five thousand, fifty-six".