22555897 has 16 divisors (see below), whose sum is σ = 27885312. Its totient is φ = 17766720.

The previous prime is 22555891. The next prime is 22555901. The reversal of 22555897 is 79855522.

It is a cyclic number.

It is not a de Polignac number, because 22555897 - 2²³ = 14167289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22555891) 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 in 15 ways as a sum of consecutive naturals, for example, 27903 + ... + 28699.

It is an arithmetic number, because the mean of its divisors is an integer number (1742832).

Almost surely, 2^22555897 is an apocalyptic number.

It is an amenable number.

22555897 is a deficient number, since it is larger than the sum of its proper divisors (5329415).

22555897 is a wasteful number, since it uses less digits than its factorization.

22555897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 252000, while the sum is 43.

The square root of 22555897 is about 4749.3048965085. The cubic root of 22555897 is about 282.5443979611.

The spelling of 22555897 in words is "twenty-two million, five hundred fifty-five thousand, eight hundred ninety-seven".