55655560772 has 48 divisors (see below), whose sum is σ = 121922962560. Its totient is φ = 21675182592.

The previous prime is 55655560771. The next prime is 55655560787. The reversal of 55655560772 is 27706555655.

55655560772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55655560771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002118 + ... + 2029725.

It is an arithmetic number, because the mean of its divisors is an integer number (2540061720).

Almost surely, 2^55655560772 is an apocalyptic number.

It is an amenable number.

55655560772 is an abundant number, since it is smaller than the sum of its proper divisors (66267401788).

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

55655560772 is a wasteful number, since it uses less digits than its factorization.

55655560772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031900 (or 4031898 counting only the distinct ones).

The product of its (nonzero) digits is 11025000, while the sum is 53.

The spelling of 55655560772 in words is "fifty-five billion, six hundred fifty-five million, five hundred sixty thousand, seven hundred seventy-two".