22252566 has 24 divisors (see below), whose sum is σ = 51771960. Its totient is φ = 6357792.

The previous prime is 22252561. The next prime is 22252567. The reversal of 22252566 is 66525222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37551 + ... + 38138.

It is an arithmetic number, because the mean of its divisors is an integer number (2157165).

Almost surely, 2^22252566 is an apocalyptic number.

22252566 is an abundant number, since it is smaller than the sum of its proper divisors (29519394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22252566 is a wasteful number, since it uses less digits than its factorization.

22252566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75708 (or 75701 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 22252566 is about 4717.2625536427. The cubic root of 22252566 is about 281.2721282343.

Adding to 22252566 its reverse (66525222), we get a palindrome (88777788).

The spelling of 22252566 in words is "twenty-two million, two hundred fifty-two thousand, five hundred sixty-six".