5531931521955 has 64 divisors (see below), whose sum is σ = 9959928883200. Its totient is φ = 2912755023360.

The previous prime is 5531931521891. The next prime is 5531931522023. The reversal of 5531931521955 is 5591251391355.

5531931521955 is a `hidden beast` number, since 5 + 5 + 31 + 9 + 31 + 521 + 9 + 55 = 666.

It is not a de Polignac number, because 5531931521955 - 2⁶ = 5531931521891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194696700 + ... + 194725110.

It is an arithmetic number, because the mean of its divisors is an integer number (155623888800).

Almost surely, 2^{5531931521955} is an apocalyptic number.

5531931521955 is a deficient number, since it is larger than the sum of its proper divisors (4427997361245).

5531931521955 is a wasteful number, since it uses less digits than its factorization.

5531931521955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46761 (or 46755 counting only the distinct ones).

The product of its digits is 4556250, while the sum is 54.

The spelling of 5531931521955 in words is "five trillion, five hundred thirty-one billion, nine hundred thirty-one million, five hundred twenty-one thousand, nine hundred fifty-five".