22265791 has 2 divisors, whose sum is σ = 22265792. Its totient is φ = 22265790.

The previous prime is 22265779. The next prime is 22265797. The reversal of 22265791 is 19756222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22265791 - 2⁵ = 22265759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22265797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11132895 + 11132896.

It is an arithmetic number, because the mean of its divisors is an integer number (11132896).

Almost surely, 2^22265791 is an apocalyptic number.

22265791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22265791 is an equidigital number, since it uses as much as digits as its factorization.

22265791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 22265791 is about 4718.6641118011. The cubic root of 22265791 is about 281.3278384720.

The spelling of 22265791 in words is "twenty-two million, two hundred sixty-five thousand, seven hundred ninety-one".