22644541 has 2 divisors, whose sum is σ = 22644542. Its totient is φ = 22644540.

The previous prime is 22644521. The next prime is 22644547. The reversal of 22644541 is 14544622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15832441 + 6812100 = 3979^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 22644541 - 2⁵ = 22644509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22644547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322270 + 11322271.

It is an arithmetic number, because the mean of its divisors is an integer number (11322271).

Almost surely, 2^22644541 is an apocalyptic number.

It is an amenable number.

22644541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22644541 is an equidigital number, since it uses as much as digits as its factorization.

22644541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 28.

The square root of 22644541 is about 4758.6280585900. The cubic root of 22644541 is about 282.9140444919.

The spelling of 22644541 in words is "twenty-two million, six hundred forty-four thousand, five hundred forty-one".