22887251 has 2 divisors, whose sum is σ = 22887252. Its totient is φ = 22887250.

The previous prime is 22887239. The next prime is 22887257. The reversal of 22887251 is 15278822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22887251 - 2¹⁸ = 22625107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22887257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11443625 + 11443626.

It is an arithmetic number, because the mean of its divisors is an integer number (11443626).

Almost surely, 2^22887251 is an apocalyptic number.

22887251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22887251 is an equidigital number, since it uses as much as digits as its factorization.

22887251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 35.

The square root of 22887251 is about 4784.0621860507. The cubic root of 22887251 is about 283.9212363409.

The spelling of 22887251 in words is "twenty-two million, eight hundred eighty-seven thousand, two hundred fifty-one".