22247161 has 2 divisors, whose sum is σ = 22247162. Its totient is φ = 22247160.

The previous prime is 22247153. The next prime is 22247171. The reversal of 22247161 is 16174222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18020025 + 4227136 = 4245^2 + 2056^2 .

It is a cyclic number.

It is not a de Polignac number, because 22247161 - 2³ = 22247153 is a prime.

It is not a weakly prime, because it can be changed into another prime (22247171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11123580 + 11123581.

It is an arithmetic number, because the mean of its divisors is an integer number (11123581).

Almost surely, 2^22247161 is an apocalyptic number.

It is an amenable number.

22247161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22247161 is an equidigital number, since it uses as much as digits as its factorization.

22247161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 22247161 is about 4716.6896230301. The cubic root of 22247161 is about 281.2493533483.

The spelling of 22247161 in words is "twenty-two million, two hundred forty-seven thousand, one hundred sixty-one".