22536251 has 12 divisors (see below), whose sum is σ = 23969232. Its totient is φ = 21147984.

The previous prime is 22536193. The next prime is 22536259. The reversal of 22536251 is 15263522.

It is not a de Polignac number, because 22536251 - 2¹⁴ = 22519867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22536251.

It is not an unprimeable number, because it can be changed into a prime (22536259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143465 + ... + 143621.

It is an arithmetic number, because the mean of its divisors is an integer number (1997436).

Almost surely, 2^22536251 is an apocalyptic number.

22536251 is a deficient number, since it is larger than the sum of its proper divisors (1432981).

22536251 is an equidigital number, since it uses as much as digits as its factorization.

22536251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 259 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 22536251 is about 4747.2361432733. The cubic root of 22536251 is about 282.4623428543.

Adding to 22536251 its reverse (15263522), we get a palindrome (37799773).

The spelling of 22536251 in words is "twenty-two million, five hundred thirty-six thousand, two hundred fifty-one".