22551604 has 12 divisors (see below), whose sum is σ = 39636324. Its totient is φ = 11226944.

The previous prime is 22551593. The next prime is 22551619. The reversal of 22551604 is 40615522.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 17623204 = 2220^2 + 4198^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11167 + ... + 13030.

It is an arithmetic number, because the mean of its divisors is an integer number (3303027).

Almost surely, 2^22551604 is an apocalyptic number.

It is an amenable number.

22551604 is a deficient number, since it is larger than the sum of its proper divisors (17084720).

22551604 is a wasteful number, since it uses less digits than its factorization.

22551604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24434 (or 24432 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22551604 is about 4748.8529141257. The cubic root of 22551604 is about 282.5264715320.

The spelling of 22551604 in words is "twenty-two million, five hundred fifty-one thousand, six hundred four".