22497255 has 48 divisors (see below), whose sum is σ = 43490304. Its totient is φ = 10664640.

The previous prime is 22497253. The next prime is 22497259. The reversal of 22497255 is 55279422.

It is a happy number.

It is not a de Polignac number, because 22497255 - 2¹ = 22497253 is a prime.

It is a super-2 number, since 2×22497255² = 1012252965070050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22782 + ... + 23748.

It is an arithmetic number, because the mean of its divisors is an integer number (906048).

Almost surely, 2^22497255 is an apocalyptic number.

22497255 is a deficient number, since it is larger than the sum of its proper divisors (20993049).

22497255 is a wasteful number, since it uses less digits than its factorization.

22497255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1033 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 22497255 is about 4743.1271330210. The cubic root of 22497255 is about 282.2993275578.

It can be divided in two parts, 224 and 97255, that added together give a palindrome (97479).

The spelling of 22497255 in words is "twenty-two million, four hundred ninety-seven thousand, two hundred fifty-five".