22554 has 24 divisors (see below), whose sum is σ = 56160. Its totient is φ = 6408.

The previous prime is 22549. The next prime is 22567. The reversal of 22554 is 45522.

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

It is an Ulam number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22554.

It is an unprimeable number.

22554 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37 + ... + 215.

It is an arithmetic number, because the mean of its divisors is an integer number (2340).

2²²⁵⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28080).

22554 is an abundant number, since it is smaller than the sum of its proper divisors (33606).

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

22554 is a wasteful number, since it uses less digits than its factorization.

22554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 191 counting only the distinct ones).

The product of its digits is 400, while the sum is 18.

The square root of 22554 is about 150.1798921294. The cubic root of 22554 is about 28.2536476873.

It can be divided in two parts, 22 and 554, that added together give a square (576 = 24²).

The spelling of 22554 in words is "twenty-two thousand, five hundred fifty-four".