22562 has 8 divisors (see below), whose sum is σ = 35100. Its totient is φ = 10864.

The previous prime is 22549. The next prime is 22567. The reversal of 22562 is 26522.

22562 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 22201 + 361 = 149^2 + 19^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22562.

It is not an unprimeable number, because it can be changed into a prime (22567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 252.

2²²⁵⁶² is an apocalyptic number.

22562 is a deficient number, since it is larger than the sum of its proper divisors (12538).

22562 is a wasteful number, since it uses less digits than its factorization.

22562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its digits is 240, while the sum is 17.

The square root of 22562 is about 150.2065244921. The cubic root of 22562 is about 28.2569878555.

Subtracting from 22562 its product of digits (240), we obtain a palindrome (22322).

The spelling of 22562 in words is "twenty-two thousand, five hundred sixty-two".