22655651 has 2 divisors, whose sum is σ = 22655652. Its totient is φ = 22655650.

The previous prime is 22655629. The next prime is 22655663. The reversal of 22655651 is 15655622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22655651 - 2²² = 18461347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22655671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11327825 + 11327826.

It is an arithmetic number, because the mean of its divisors is an integer number (11327826).

Almost surely, 2^22655651 is an apocalyptic number.

22655651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22655651 is an equidigital number, since it uses as much as digits as its factorization.

22655651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 22655651 is about 4759.7952687064. The cubic root of 22655651 is about 282.9603052534.

The spelling of 22655651 in words is "twenty-two million, six hundred fifty-five thousand, six hundred fifty-one".