22589 has 6 divisors (see below), whose sum is σ = 26334. Its totient is φ = 19320.

The previous prime is 22573. The next prime is 22613. The reversal of 22589 is 98522.

It can be written as a sum of positive squares in only one way, i.e., 17689 + 4900 = 133^2 + 70^2 .

It is not a de Polignac number, because 22589 - 2⁴ = 22573 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22549) 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, 182 + ... + 279.

It is an arithmetic number, because the mean of its divisors is an integer number (4389).

2²²⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

22589 is a deficient number, since it is larger than the sum of its proper divisors (3745).

22589 is an equidigital number, since it uses as much as digits as its factorization.

22589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 468 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 22589 is about 150.2963738751. The cubic root of 22589 is about 28.2682550974.

The spelling of 22589 in words is "twenty-two thousand, five hundred eighty-nine".