22775161 has 2 divisors, whose sum is σ = 22775162. Its totient is φ = 22775160.

The previous prime is 22775141. The next prime is 22775171. The reversal of 22775161 is 16157722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21335161 + 1440000 = 4619^2 + 1200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22775161 - 2¹⁵ = 22742393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22775101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387580 + 11387581.

It is an arithmetic number, because the mean of its divisors is an integer number (11387581).

Almost surely, 2^22775161 is an apocalyptic number.

It is an amenable number.

22775161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22775161 is an equidigital number, since it uses as much as digits as its factorization.

22775161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 22775161 is about 4772.3328676864. The cubic root of 22775161 is about 283.4569774844.

The spelling of 22775161 in words is "twenty-two million, seven hundred seventy-five thousand, one hundred sixty-one".