22521032 has 8 divisors (see below), whose sum is σ = 42226950. Its totient is φ = 11260512.

The previous prime is 22520999. The next prime is 22521041. The reversal of 22521032 is 23012522.

It can be written as a sum of positive squares in only one way, i.e., 15413476 + 7107556 = 3926^2 + 2666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22521032.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407557 + ... + 1407572.

Almost surely, 2^22521032 is an apocalyptic number.

It is an amenable number.

22521032 is a deficient number, since it is larger than the sum of its proper divisors (19705918).

22521032 is a wasteful number, since it uses less digits than its factorization.

22521032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815135 (or 2815131 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22521032 is about 4745.6329398722. The cubic root of 22521032 is about 282.3987451359.

Adding to 22521032 its reverse (23012522), we get a palindrome (45533554).

The spelling of 22521032 in words is "twenty-two million, five hundred twenty-one thousand, thirty-two".