55855 has 4 divisors (see below), whose sum is σ = 67032. Its totient is φ = 44680.

The previous prime is 55849. The next prime is 55871.

55855 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 55855 - 2⁵ = 55823 is a prime.

It is a Duffinian number.

It is a congruent 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, 5581 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (16758).

2⁵⁵⁸⁵⁵ is an apocalyptic number.

55855 is a deficient number, since it is larger than the sum of its proper divisors (11177).

55855 is a wasteful number, since it uses less digits than its factorization.

55855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176.

The product of its digits is 5000, while the sum is 28.

The square root of 55855 is about 236.3366243306. The cubic root of 55855 is about 38.2255742784.

The spelling of 55855 in words is "fifty-five thousand, eight hundred fifty-five".