22645163 has 2 divisors, whose sum is σ = 22645164. Its totient is φ = 22645162.

The previous prime is 22645127. The next prime is 22645193. The reversal of 22645163 is 36154622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22645163 - 2⁶ = 22645099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22645193) 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, 11322581 + 11322582.

It is an arithmetic number, because the mean of its divisors is an integer number (11322582).

Almost surely, 2^22645163 is an apocalyptic number.

22645163 is a deficient number, since it is larger than the sum of its proper divisors (1).

22645163 is an equidigital number, since it uses as much as digits as its factorization.

22645163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 22645163 is about 4758.6934131125. The cubic root of 22645163 is about 282.9166348281.

Adding to 22645163 its reverse (36154622), we get a palindrome (58799785).

The spelling of 22645163 in words is "twenty-two million, six hundred forty-five thousand, one hundred sixty-three".