22787253 has 6 divisors (see below), whose sum is σ = 32914934. Its totient is φ = 15191496.

The previous prime is 22787249. The next prime is 22787269. The reversal of 22787253 is 35278722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15350724 + 7436529 = 3918^2 + 2727^2 .

It is not a de Polignac number, because 22787253 - 2² = 22787249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22787203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1265950 + ... + 1265967.

Almost surely, 2^22787253 is an apocalyptic number.

It is an amenable number.

22787253 is a deficient number, since it is larger than the sum of its proper divisors (10127681).

22787253 is a wasteful number, since it uses less digits than its factorization.

22787253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531923 (or 2531920 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 22787253 is about 4773.5995852187. The cubic root of 22787253 is about 283.5071338126.

The spelling of 22787253 in words is "twenty-two million, seven hundred eighty-seven thousand, two hundred fifty-three".