22038161 has 2 divisors, whose sum is σ = 22038162. Its totient is φ = 22038160.

The previous prime is 22038151. The next prime is 22038167. The reversal of 22038161 is 16183022.

22038161 = 3319² + 3320².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 11015761 = 3320^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 22038161 - 2²² = 17843857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22038167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11019080 + 11019081.

It is an arithmetic number, because the mean of its divisors is an integer number (11019081).

Almost surely, 2^22038161 is an apocalyptic number.

22038161 is the 3320-th centered square number.

It is an amenable number.

22038161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22038161 is an equidigital number, since it uses as much as digits as its factorization.

22038161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22038161 is about 4694.4819735515. The cubic root of 22038161 is about 280.3658525452.

The spelling of 22038161 in words is "twenty-two million, thirty-eight thousand, one hundred sixty-one".