22564541 has 4 divisors (see below), whose sum is σ = 23545632. Its totient is φ = 21583452.

The previous prime is 22564537. The next prime is 22564543. The reversal of 22564541 is 14546522.

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 22564541 - 2² = 22564537 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 (22564543) 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, 490511 + ... + 490556.

It is an arithmetic number, because the mean of its divisors is an integer number (5886408).

Almost surely, 2^22564541 is an apocalyptic number.

It is an amenable number.

22564541 is a deficient number, since it is larger than the sum of its proper divisors (981091).

22564541 is an equidigital number, since it uses as much as digits as its factorization.

22564541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981090.

The product of its digits is 9600, while the sum is 29.

The square root of 22564541 is about 4750.2148372468. The cubic root of 22564541 is about 282.5804861121.

The spelling of 22564541 in words is "twenty-two million, five hundred sixty-four thousand, five hundred forty-one".