55089 has 6 divisors (see below), whose sum is σ = 79586. Its totient is φ = 36720.

The previous prime is 55079. The next prime is 55103. The reversal of 55089 is 98055.

It can be written as a sum of positive squares in only one way, i.e., 36864 + 18225 = 192^2 + 135^2 .

It is not a de Polignac number, because 55089 - 2⁴ = 55073 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (55009) 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, 3052 + ... + 3069.

2⁵⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

55089 is a deficient number, since it is larger than the sum of its proper divisors (24497).

55089 is a wasteful number, since it uses less digits than its factorization.

55089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127 (or 6124 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 55089 is about 234.7104599288. The cubic root of 55089 is about 38.0500264481.

The spelling of 55089 in words is "fifty-five thousand, eighty-nine".