22551863 has 2 divisors, whose sum is σ = 22551864. Its totient is φ = 22551862.

The previous prime is 22551853. The next prime is 22551887. The reversal of 22551863 is 36815522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22551863 - 2²⁴ = 5774647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22551853) 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, 11275931 + 11275932.

It is an arithmetic number, because the mean of its divisors is an integer number (11275932).

Almost surely, 2^22551863 is an apocalyptic number.

22551863 is a deficient number, since it is larger than the sum of its proper divisors (1).

22551863 is an equidigital number, since it uses as much as digits as its factorization.

22551863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 22551863 is about 4748.8801837907. The cubic root of 22551863 is about 282.5275531118.

The spelling of 22551863 in words is "twenty-two million, five hundred fifty-one thousand, eight hundred sixty-three".