22749563 has 2 divisors, whose sum is σ = 22749564. Its totient is φ = 22749562.

The previous prime is 22749541. The next prime is 22749583. The reversal of 22749563 is 36594722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22749563 - 2¹⁶ = 22684027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22749533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11374781 + 11374782.

It is an arithmetic number, because the mean of its divisors is an integer number (11374782).

Almost surely, 2^22749563 is an apocalyptic number.

22749563 is a deficient number, since it is larger than the sum of its proper divisors (1).

22749563 is an equidigital number, since it uses as much as digits as its factorization.

22749563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 22749563 is about 4769.6501968174. The cubic root of 22749563 is about 283.3507411065.

The spelling of 22749563 in words is "twenty-two million, seven hundred forty-nine thousand, five hundred sixty-three".