55718 has 8 divisors (see below), whose sum is σ = 90048. Its totient is φ = 25704.

The previous prime is 55717. The next prime is 55721. The reversal of 55718 is 81755.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 2143 = 55718 / (5 + 5 + 7 + 1 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (11256).

2⁵⁵⁷¹⁸ is an apocalyptic number.

55718 is a deficient number, since it is larger than the sum of its proper divisors (34330).

55718 is a wasteful number, since it uses less digits than its factorization.

55718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158.

The product of its digits is 1400, while the sum is 26.

The square root of 55718 is about 236.0466055676. The cubic root of 55718 is about 38.1942957227.

It can be divided in two parts, 557 and 18, that added together give a palindrome (575).

The spelling of 55718 in words is "fifty-five thousand, seven hundred eighteen".