55056506556 has 24 divisors (see below), whose sum is σ = 129445835904. Its totient is φ = 18212075440.

The previous prime is 55056506513. The next prime is 55056506579. The reversal of 55056506556 is 65560565055.

It is a super-2 number, since 2×55056506556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 17510040 + ... + 17513183.

It is an arithmetic number, because the mean of its divisors is an integer number (5393576496).

Almost surely, 2^55056506556 is an apocalyptic number.

It is an amenable number.

55056506556 is an abundant number, since it is smaller than the sum of its proper divisors (74389329348).

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

55056506556 is a wasteful number, since it uses less digits than its factorization.

55056506556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35023361 (or 35023359 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 48.

The spelling of 55056506556 in words is "fifty-five billion, fifty-six million, five hundred six thousand, five hundred fifty-six".