55657075655 has 32 divisors (see below), whose sum is σ = 68763340800. Its totient is φ = 43233840000.

The previous prime is 55657075651. The next prime is 55657075681.

It is a happy number.

55657075655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55657075655 - 2² = 55657075651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55657075655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55657075651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6019526 + ... + 6028764.

It is an arithmetic number, because the mean of its divisors is an integer number (2148854400).

Almost surely, 2^55657075655 is an apocalyptic number.

55657075655 is a deficient number, since it is larger than the sum of its proper divisors (13106265145).

55657075655 is a wasteful number, since it uses less digits than its factorization.

55657075655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575.

The product of its (nonzero) digits is 27562500, while the sum is 56.

The spelling of 55657075655 in words is "fifty-five billion, six hundred fifty-seven million, seventy-five thousand, six hundred fifty-five".