22651252 has 48 divisors (see below), whose sum is σ = 44792272. Its totient is φ = 9953280.

The previous prime is 22651247. The next prime is 22651253. The reversal of 22651252 is 25215622.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3519376 + 19131876 = 1876^2 + 4374^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22651253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117268 + ... + 117460.

Almost surely, 2^22651252 is an apocalyptic number.

It is an amenable number.

22651252 is a deficient number, since it is larger than the sum of its proper divisors (22141020).

22651252 is a wasteful number, since it uses less digits than its factorization.

22651252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 306 counting only the distinct ones).

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

The square root of 22651252 is about 4759.3331465658. Note that the first 3 decimals coincide. The cubic root of 22651252 is about 282.9419901326.

Adding to 22651252 its reverse (25215622), we get a palindrome (47866874).

It can be divided in two parts, 226512 and 52, that multiplied together give a square (11778624 = 3432²).

The spelling of 22651252 in words is "twenty-two million, six hundred fifty-one thousand, two hundred fifty-two".