22245161 has 2 divisors, whose sum is σ = 22245162. Its totient is φ = 22245160.

The previous prime is 22245151. The next prime is 22245187. The reversal of 22245161 is 16154222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 295936 = 4685^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 22245161 - 2¹⁴ = 22228777 is a prime.

It is not a weakly prime, because it can be changed into another prime (22245121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122580 + 11122581.

It is an arithmetic number, because the mean of its divisors is an integer number (11122581).

Almost surely, 2^22245161 is an apocalyptic number.

It is an amenable number.

22245161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245161 is an equidigital number, since it uses as much as digits as its factorization.

22245161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 22245161 is about 4716.4776051626. The cubic root of 22245161 is about 281.2409250734.

Adding to 22245161 its reverse (16154222), we get a palindrome (38399383).

The spelling of 22245161 in words is "twenty-two million, two hundred forty-five thousand, one hundred sixty-one".