22563389 has 4 divisors (see below), whose sum is σ = 22900224. Its totient is φ = 22226556.

The previous prime is 22563371. The next prime is 22563397. The reversal of 22563389 is 98336522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22563389 - 2²⁴ = 5786173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22563329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168317 + ... + 168450.

It is an arithmetic number, because the mean of its divisors is an integer number (5725056).

Almost surely, 2^22563389 is an apocalyptic number.

It is an amenable number.

22563389 is a deficient number, since it is larger than the sum of its proper divisors (336835).

22563389 is an equidigital number, since it uses as much as digits as its factorization.

22563389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336834.

The product of its digits is 77760, while the sum is 38.

The square root of 22563389 is about 4750.0935780256. The cubic root of 22563389 is about 282.5756771177.

The spelling of 22563389 in words is "twenty-two million, five hundred sixty-three thousand, three hundred eighty-nine".