22563287 has 2 divisors, whose sum is σ = 22563288. Its totient is φ = 22563286.

The previous prime is 22563263. The next prime is 22563293. The reversal of 22563287 is 78236522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22563287 - 2¹⁰ = 22562263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22560287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11281643 + 11281644.

It is an arithmetic number, because the mean of its divisors is an integer number (11281644).

Almost surely, 2^22563287 is an apocalyptic number.

22563287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22563287 is an equidigital number, since it uses as much as digits as its factorization.

22563287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 22563287 is about 4750.0828413829. The cubic root of 22563287 is about 282.5752513134.

The spelling of 22563287 in words is "twenty-two million, five hundred sixty-three thousand, two hundred eighty-seven".