22544 has 10 divisors (see below), whose sum is σ = 43710. Its totient is φ = 11264.

The previous prime is 22543. The next prime is 22549. The reversal of 22544 is 44522.

It can be written as a sum of positive squares in only one way, i.e., 12544 + 10000 = 112^2 + 100^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22544.

It is not an unprimeable number, because it can be changed into a prime (22541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689 + ... + 720.

It is an arithmetic number, because the mean of its divisors is an integer number (4371).

2²²⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

22544 is a deficient number, since it is larger than the sum of its proper divisors (21166).

22544 is a wasteful number, since it uses less digits than its factorization.

22544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417 (or 1411 counting only the distinct ones).

The product of its digits is 320, while the sum is 17.

The square root of 22544 is about 150.1465950330. The cubic root of 22544 is about 28.2494713661.

The spelling of 22544 in words is "twenty-two thousand, five hundred forty-four".