55510401555 has 24 divisors (see below), whose sum is σ = 109963462752. Its totient is φ = 25376183424.

The previous prime is 55510401523. The next prime is 55510401571.

55510401555 is a `hidden beast` number, since 5 + 55 + 10 + 40 + 1 + 555 = 666.

55510401555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55510401555 - 2⁵ = 55510401523 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88111434 + ... + 88112063.

It is an arithmetic number, because the mean of its divisors is an integer number (4581810948).

Almost surely, 2^55510401555 is an apocalyptic number.

55510401555 is a deficient number, since it is larger than the sum of its proper divisors (54453061197).

55510401555 is a wasteful number, since it uses less digits than its factorization.

55510401555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176223515 (or 176223512 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 55510401555 in words is "fifty-five billion, five hundred ten million, four hundred one thousand, five hundred fifty-five".