22559557 has 2 divisors, whose sum is σ = 22559558. Its totient is φ = 22559556.

The previous prime is 22559533. The next prime is 22559567. The reversal of 22559557 is 75595522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11840481 + 10719076 = 3441^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 22559557 - 2⁷ = 22559429 is a prime.

It is a super-2 number, since 2×22559557² = 1017867224072498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22559507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11279778 + 11279779.

It is an arithmetic number, because the mean of its divisors is an integer number (11279779).

Almost surely, 2^22559557 is an apocalyptic number.

It is an amenable number.

22559557 is a deficient number, since it is larger than the sum of its proper divisors (1).

22559557 is an equidigital number, since it uses as much as digits as its factorization.

22559557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 40.

The square root of 22559557 is about 4749.6902004236. The cubic root of 22559557 is about 282.5596793539.

The spelling of 22559557 in words is "twenty-two million, five hundred fifty-nine thousand, five hundred fifty-seven".