22544551 has 2 divisors, whose sum is σ = 22544552. Its totient is φ = 22544550.

The previous prime is 22544539. The next prime is 22544573. The reversal of 22544551 is 15544522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22544551 - 2⁵ = 22544519 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 (22544591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11272275 + 11272276.

It is an arithmetic number, because the mean of its divisors is an integer number (11272276).

Almost surely, 2^22544551 is an apocalyptic number.

22544551 is a deficient number, since it is larger than the sum of its proper divisors (1).

22544551 is an equidigital number, since it uses as much as digits as its factorization.

22544551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 28.

The square root of 22544551 is about 4748.1102556701. The cubic root of 22544551 is about 282.4970151354.

The spelling of 22544551 in words is "twenty-two million, five hundred forty-four thousand, five hundred fifty-one".