55397656975 has 6 divisors (see below), whose sum is σ = 68693094680. Its totient is φ = 44318125560.

The previous prime is 55397656969. The next prime is 55397656987. The reversal of 55397656975 is 57965679355.

It is not a de Polignac number, because 55397656975 - 2²³ = 55389268367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55397656975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1107953115 + ... + 1107953164.

Almost surely, 2^55397656975 is an apocalyptic number.

55397656975 is a deficient number, since it is larger than the sum of its proper divisors (13295437705).

55397656975 is a wasteful number, since it uses less digits than its factorization.

55397656975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215906289 (or 2215906284 counting only the distinct ones).

The product of its digits is 267907500, while the sum is 67.

The spelling of 55397656975 in words is "fifty-five billion, three hundred ninety-seven million, six hundred fifty-six thousand, nine hundred seventy-five".