22521056 has 24 divisors (see below), whose sum is σ = 46947600. Its totient is φ = 10597888.

The previous prime is 22521041. The next prime is 22521089. The reversal of 22521056 is 65012522.

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, 20156 + ... + 21243.

It is an arithmetic number, because the mean of its divisors is an integer number (1956150).

Almost surely, 2^22521056 is an apocalyptic number.

It is an amenable number.

22521056 is an abundant number, since it is smaller than the sum of its proper divisors (24426544).

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

22521056 is a wasteful number, since it uses less digits than its factorization.

22521056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41426 (or 41418 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 22521056 is about 4745.6354685121. The cubic root of 22521056 is about 282.3988454505.

Adding to 22521056 its reverse (65012522), we get a palindrome (87533578).

The spelling of 22521056 in words is "twenty-two million, five hundred twenty-one thousand, fifty-six".