55500051957 has 16 divisors (see below), whose sum is σ = 84589327872. Its totient is φ = 31707632880.

The previous prime is 55500051907. The next prime is 55500051961. The reversal of 55500051957 is 75915000555.

It is not a de Polignac number, because 55500051957 - 2¹² = 55500047861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500051907) 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, 175519 + ... + 376572.

It is an arithmetic number, because the mean of its divisors is an integer number (5286832992).

Almost surely, 2^55500051957 is an apocalyptic number.

It is an amenable number.

55500051957 is a deficient number, since it is larger than the sum of its proper divisors (29089275915).

55500051957 is a wasteful number, since it uses less digits than its factorization.

55500051957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556888.

The product of its (nonzero) digits is 196875, while the sum is 42.

The spelling of 55500051957 in words is "fifty-five billion, five hundred million, fifty-one thousand, nine hundred fifty-seven".