22251602 has 16 divisors (see below), whose sum is σ = 34587000. Its totient is φ = 10728960.

The previous prime is 22251601. The next prime is 22251611. The reversal of 22251602 is 20615222.

It can be written as a sum of positive squares in 4 ways, for example, as 5202961 + 17048641 = 2281^2 + 4129^2 .

It is not an unprimeable number, because it can be changed into a prime (22251601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5774 + ... + 8822.

Almost surely, 2^22251602 is an apocalyptic number.

22251602 is a deficient number, since it is larger than the sum of its proper divisors (12335398).

22251602 is a wasteful number, since it uses less digits than its factorization.

22251602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22251602 is about 4717.1603746322. The cubic root of 22251602 is about 281.2680665267.

Adding to 22251602 its reverse (20615222), we get a palindrome (42866824).

The spelling of 22251602 in words is "twenty-two million, two hundred fifty-one thousand, six hundred two".