22023791 has 2 divisors, whose sum is σ = 22023792. Its totient is φ = 22023790.

The previous prime is 22023787. The next prime is 22023797. The reversal of 22023791 is 19732022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22023791 - 2² = 22023787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22023791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22023797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011895 + 11011896.

It is an arithmetic number, because the mean of its divisors is an integer number (11011896).

Almost surely, 2^22023791 is an apocalyptic number.

22023791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22023791 is an equidigital number, since it uses as much as digits as its factorization.

22023791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 22023791 is about 4692.9512036670. The cubic root of 22023791 is about 280.3049017050.

The spelling of 22023791 in words is "twenty-two million, twenty-three thousand, seven hundred ninety-one".