55575857555 has 4 divisors (see below), whose sum is σ = 66691029072. Its totient is φ = 44460686040.

The previous prime is 55575857543. The next prime is 55575857593.

It is a happy number.

55575857555 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55575857555 - 2⁴ = 55575857539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5557585751 + ... + 5557585760.

It is an arithmetic number, because the mean of its divisors is an integer number (16672757268).

Almost surely, 2^55575857555 is an apocalyptic number.

55575857555 is a deficient number, since it is larger than the sum of its proper divisors (11115171517).

55575857555 is a wasteful number, since it uses less digits than its factorization.

55575857555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115171516.

The product of its digits is 153125000, while the sum is 62.

The spelling of 55575857555 in words is "fifty-five billion, five hundred seventy-five million, eight hundred fifty-seven thousand, five hundred fifty-five".