22554365 has 4 divisors (see below), whose sum is σ = 27065244. Its totient is φ = 18043488.

The previous prime is 22554361. The next prime is 22554377. The reversal of 22554365 is 56345522.

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 9406489 + 13147876 = 3067^2 + 3626^2 .

It is a cyclic number.

It is not a de Polignac number, because 22554365 - 2² = 22554361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22554361) 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, 2255432 + ... + 2255441.

It is an arithmetic number, because the mean of its divisors is an integer number (6766311).

Almost surely, 2^22554365 is an apocalyptic number.

It is an amenable number.

22554365 is a deficient number, since it is larger than the sum of its proper divisors (4510879).

22554365 is an equidigital number, since it uses as much as digits as its factorization.

22554365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510878.

The product of its digits is 36000, while the sum is 32.

The square root of 22554365 is about 4749.1436070096. The cubic root of 22554365 is about 282.5380009965.

Adding to 22554365 its reverse (56345522), we get a palindrome (78899887).

The spelling of 22554365 in words is "twenty-two million, five hundred fifty-four thousand, three hundred sixty-five".