22004791 has 2 divisors, whose sum is σ = 22004792. Its totient is φ = 22004790.

The previous prime is 22004779. The next prime is 22004797. The reversal of 22004791 is 19740022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22004791 - 2¹³ = 21996599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002395 + 11002396.

It is an arithmetic number, because the mean of its divisors is an integer number (11002396).

Almost surely, 2^22004791 is an apocalyptic number.

22004791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004791 is an equidigital number, since it uses as much as digits as its factorization.

22004791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 22004791 is about 4690.9264543371. The cubic root of 22004791 is about 280.2242718474.

The spelling of 22004791 in words is "twenty-two million, four thousand, seven hundred ninety-one".