22104491 has 2 divisors, whose sum is σ = 22104492. Its totient is φ = 22104490.

The previous prime is 22104463. The next prime is 22104517. The reversal of 22104491 is 19440122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22104491 - 2⁶ = 22104427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22104431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052245 + 11052246.

It is an arithmetic number, because the mean of its divisors is an integer number (11052246).

Almost surely, 2^22104491 is an apocalyptic number.

22104491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22104491 is an equidigital number, since it uses as much as digits as its factorization.

22104491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22104491 is about 4701.5413430066. The cubic root of 22104491 is about 280.6468505959.

The spelling of 22104491 in words is "twenty-two million, one hundred four thousand, four hundred ninety-one".