55621057523076 has 72 divisors (see below), whose sum is σ = 144399602017944. Its totient is φ = 18039013079040.

The previous prime is 55621057523071. The next prime is 55621057523183. The reversal of 55621057523076 is 67032575012655.

55621057523076 is a `hidden beast` number, since 5 + 5 + 6 + 2 + 105 + 7 + 523 + 0 + 7 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28928541932676 + 26692515590400 = 5378526^2 + 5166480^2 .

It is not an unprimeable number, because it can be changed into a prime (55621057523071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113055796 + ... + 113546708.

It is an arithmetic number, because the mean of its divisors is an integer number (2005550028027).

Almost surely, 2^{55621057523076} is an apocalyptic number.

It is an amenable number.

55621057523076 is an abundant number, since it is smaller than the sum of its proper divisors (88778544494868).

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

55621057523076 is a wasteful number, since it uses less digits than its factorization.

55621057523076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576021 (or 576016 counting only the distinct ones).

The product of its (nonzero) digits is 13230000, while the sum is 54.

The spelling of 55621057523076 in words is "fifty-five trillion, six hundred twenty-one billion, fifty-seven million, five hundred twenty-three thousand, seventy-six".