22655245 has 4 divisors (see below), whose sum is σ = 27186300. Its totient is φ = 18124192.

The previous prime is 22655219. The next prime is 22655249. The reversal of 22655245 is 54255622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 18957316 = 1923^2 + 4354^2 .

It is a cyclic number.

It is not a de Polignac number, because 22655245 - 2⁷ = 22655117 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22655249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2265520 + ... + 2265529.

It is an arithmetic number, because the mean of its divisors is an integer number (6796575).

Almost surely, 2^22655245 is an apocalyptic number.

It is an amenable number.

22655245 is a deficient number, since it is larger than the sum of its proper divisors (4531055).

22655245 is an equidigital number, since it uses as much as digits as its factorization.

22655245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531054.

The product of its digits is 24000, while the sum is 31.

The square root of 22655245 is about 4759.7526196222. The cubic root of 22655245 is about 282.9586149824.

The spelling of 22655245 in words is "twenty-two million, six hundred fifty-five thousand, two hundred forty-five".