22591799 has 2 divisors, whose sum is σ = 22591800. Its totient is φ = 22591798.

The previous prime is 22591771. The next prime is 22591831. The reversal of 22591799 is 99719522.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22591799 - 2²⁴ = 5814583 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 (22591729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11295899 + 11295900.

It is an arithmetic number, because the mean of its divisors is an integer number (11295900).

Almost surely, 2^22591799 is an apocalyptic number.

22591799 is a deficient number, since it is larger than the sum of its proper divisors (1).

22591799 is an equidigital number, since it uses as much as digits as its factorization.

22591799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 44.

The square root of 22591799 is about 4753.0831046806. The cubic root of 22591799 is about 282.6942262113.

The spelling of 22591799 in words is "twenty-two million, five hundred ninety-one thousand, seven hundred ninety-nine".