45189 has 6 divisors (see below), whose sum is σ = 65286. Its totient is φ = 30120.

The previous prime is 45181. The next prime is 45191. The reversal of 45189 is 98154.

It can be written as a sum of positive squares in only one way, i.e., 44100 + 1089 = 210^2 + 33^2 .

It is not a de Polignac number, because 45189 - 2³ = 45181 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45181) 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, 2502 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (10881).

2⁴⁵¹⁸⁹ is an apocalyptic number.

It is an amenable number.

45189 is a deficient number, since it is larger than the sum of its proper divisors (20097).

45189 is a wasteful number, since it uses less digits than its factorization.

45189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027 (or 5024 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 45189 is about 212.5770448567. The cubic root of 45189 is about 35.6186599983.

The spelling of 45189 in words is "forty-five thousand, one hundred eighty-nine".