22555136 has 20 divisors (see below), whose sum is σ = 45067242. Its totient is φ = 11277312.

The previous prime is 22555133. The next prime is 22555153. The reversal of 22555136 is 63155522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17172736 + 5382400 = 4144^2 + 2320^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22555099 and 22555108.

It is not an unprimeable number, because it can be changed into a prime (22555133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21515 + ... + 22538.

Almost surely, 2^22555136 is an apocalyptic number.

It is an amenable number.

22555136 is a deficient number, since it is larger than the sum of its proper divisors (22512106).

22555136 is an frugal number, since it uses more digits than its factorization.

22555136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44071 (or 44055 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 22555136 is about 4749.2247788455. The cubic root of 22555136 is about 282.5412203928.

The spelling of 22555136 in words is "twenty-two million, five hundred fifty-five thousand, one hundred thirty-six".