22949557 has 2 divisors, whose sum is σ = 22949558. Its totient is φ = 22949556.

The previous prime is 22949519. The next prime is 22949581. The reversal of 22949557 is 75594922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18309841 + 4639716 = 4279^2 + 2154^2 .

It is a cyclic number.

It is not a de Polignac number, because 22949557 - 2⁷ = 22949429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22949257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11474778 + 11474779.

It is an arithmetic number, because the mean of its divisors is an integer number (11474779).

Almost surely, 2^22949557 is an apocalyptic number.

It is an amenable number.

22949557 is a deficient number, since it is larger than the sum of its proper divisors (1).

22949557 is an equidigital number, since it uses as much as digits as its factorization.

22949557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 22949557 is about 4790.5695903514. The cubic root of 22949557 is about 284.1786426480.

The spelling of 22949557 in words is "twenty-two million, nine hundred forty-nine thousand, five hundred fifty-seven".