22104857 has 2 divisors, whose sum is σ = 22104858. Its totient is φ = 22104856.

The previous prime is 22104853. The next prime is 22104893. The reversal of 22104857 is 75840122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22052416 + 52441 = 4696^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 22104857 - 2² = 22104853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22104853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052428 + 11052429.

It is an arithmetic number, because the mean of its divisors is an integer number (11052429).

Almost surely, 2^22104857 is an apocalyptic number.

It is an amenable number.

22104857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22104857 is an equidigital number, since it uses as much as digits as its factorization.

22104857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 22104857 is about 4701.5802662509. The cubic root of 22104857 is about 280.6483995448.

Adding to 22104857 its reverse (75840122), we get a palindrome (97944979).

The spelling of 22104857 in words is "twenty-two million, one hundred four thousand, eight hundred fifty-seven".