22422457 has 2 divisors, whose sum is σ = 22422458. Its totient is φ = 22422456.

The previous prime is 22422437. The next prime is 22422467. The reversal of 22422457 is 75422422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15848361 + 6574096 = 3981^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 22422457 - 2⁷ = 22422329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22422437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11211228 + 11211229.

It is an arithmetic number, because the mean of its divisors is an integer number (11211229).

Almost surely, 2^22422457 is an apocalyptic number.

It is an amenable number.

22422457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22422457 is an equidigital number, since it uses as much as digits as its factorization.

22422457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 28.

The square root of 22422457 is about 4735.2356857922. The cubic root of 22422457 is about 281.9861209071.

Adding to 22422457 its reverse (75422422), we get a palindrome (97844879).

The spelling of 22422457 in words is "twenty-two million, four hundred twenty-two thousand, four hundred fifty-seven".