22555 has 8 divisors (see below), whose sum is σ = 29232. Its totient is φ = 16608.

The previous prime is 22549. The next prime is 22567. The reversal of 22555 is 55522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22555 - 2¹¹ = 20507 is a prime.

It is a Duffinian number.

22555 is a lucky number.

It is a plaindrome in base 10.

It is a nialpdrome in base 14.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 238.

It is an arithmetic number, because the mean of its divisors is an integer number (3654).

2²²⁵⁵⁵ is an apocalyptic number.

22555 is a deficient number, since it is larger than the sum of its proper divisors (6677).

22555 is a wasteful number, since it uses less digits than its factorization.

22555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its digits is 500, while the sum is 19.

The square root of 22555 is about 150.1832214330. The cubic root of 22555 is about 28.2540652515.

The spelling of 22555 in words is "twenty-two thousand, five hundred fifty-five".