22427161 has 2 divisors, whose sum is σ = 22427162. Its totient is φ = 22427160.

The previous prime is 22427137. The next prime is 22427173. The reversal of 22427161 is 16172422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 571536 = 4675^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 22427161 - 2¹³ = 22418969 is a prime.

It is not a weakly prime, because it can be changed into another prime (22467161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11213580 + 11213581.

It is an arithmetic number, because the mean of its divisors is an integer number (11213581).

Almost surely, 2^22427161 is an apocalyptic number.

It is an amenable number.

22427161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22427161 is an equidigital number, since it uses as much as digits as its factorization.

22427161 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 22427161 is about 4735.7323615255. The cubic root of 22427161 is about 282.0058387873.

Adding to 22427161 its reverse (16172422), we get a palindrome (38599583).

The spelling of 22427161 in words is "twenty-two million, four hundred twenty-seven thousand, one hundred sixty-one".