55918 has 8 divisors (see below), whose sum is σ = 85248. Its totient is φ = 27504.

The previous prime is 55903. The next prime is 55921. The reversal of 55918 is 81955.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 46 + ... + 337.

It is an arithmetic number, because the mean of its divisors is an integer number (10656).

2⁵⁵⁹¹⁸ is an apocalyptic number.

55918 is a deficient number, since it is larger than the sum of its proper divisors (29330).

55918 is a wasteful number, since it uses less digits than its factorization.

55918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458.

The product of its digits is 1800, while the sum is 28.

The square root of 55918 is about 236.4698712310. The cubic root of 55918 is about 38.2399406814.

The spelling of 55918 in words is "fifty-five thousand, nine hundred eighteen".