22647161 has 2 divisors, whose sum is σ = 22647162. Its totient is φ = 22647160.

The previous prime is 22647151. The next prime is 22647223. The reversal of 22647161 is 16174622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15523600 + 7123561 = 3940^2 + 2669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22647161 is a prime.

It is not a weakly prime, because it can be changed into another prime (22647101) 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, 11323580 + 11323581.

It is an arithmetic number, because the mean of its divisors is an integer number (11323581).

Almost surely, 2^22647161 is an apocalyptic number.

It is an amenable number.

22647161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22647161 is an equidigital number, since it uses as much as digits as its factorization.

22647161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 22647161 is about 4758.9033400564. The cubic root of 22647161 is about 282.9249552335.

The spelling of 22647161 in words is "twenty-two million, six hundred forty-seven thousand, one hundred sixty-one".