55116 has 18 divisors (see below), whose sum is σ = 139412. Its totient is φ = 18360.

The previous prime is 55109. The next prime is 55117. The reversal of 55116 is 61155.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (55117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 730 + ... + 801.

2⁵⁵¹¹⁶ is an apocalyptic number.

It is an amenable number.

55116 is an abundant number, since it is smaller than the sum of its proper divisors (84296).

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

55116 is a wasteful number, since it uses less digits than its factorization.

55116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1536 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 55116 is about 234.7679705582. The cubic root of 55116 is about 38.0562417417.

It can be divided in two parts, 55 and 116, that added together give a palindrome (171).

The spelling of 55116 in words is "fifty-five thousand, one hundred sixteen".