55809900756 has 36 divisors (see below), whose sum is σ = 141158509492. Its totient is φ = 18592291584.

The previous prime is 55809900709. The next prime is 55809900823. The reversal of 55809900756 is 65700990855.

It is a happy number.

55809900756 is a `hidden beast` number, since 5 + 580 + 9 + 9 + 0 + 0 + 7 + 56 = 666.

55809900756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34707690000 + 21102210756 = 186300^2 + 145266^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55809900756² (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 11 ways as a sum of consecutive naturals, for example, 396901 + ... + 518796.

Almost surely, 2^55809900756 is an apocalyptic number.

It is an amenable number.

55809900756 is an abundant number, since it is smaller than the sum of its proper divisors (85348608736).

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

55809900756 is a wasteful number, since it uses less digits than its factorization.

55809900756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917400 (or 917395 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 54.

The spelling of 55809900756 in words is "fifty-five billion, eight hundred nine million, nine hundred thousand, seven hundred fifty-six".