55457856 has 42 divisors (see below), whose sum is σ = 158961582. Its totient is φ = 18485760.

The previous prime is 55457849. The next prime is 55457891. The reversal of 55457856 is 65875455.

It can be written as a sum of positive squares in only one way, i.e., 46457856 + 9000000 = 6816^2 + 3000^2 .

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, 47565 + ... + 48716.

Almost surely, 2^55457856 is an apocalyptic number.

It is an amenable number.

55457856 is an abundant number, since it is smaller than the sum of its proper divisors (103503726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55457856 is a wasteful number, since it uses less digits than its factorization.

55457856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96299 (or 96286 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 55457856 is about 7447.0031556325. The cubic root of 55457856 is about 381.3476067924.

The spelling of 55457856 in words is "fifty-five million, four hundred fifty-seven thousand, eight hundred fifty-six".