2192161 has 2 divisors, whose sum is σ = 2192162. Its totient is φ = 2192160.

The previous prime is 2192143. The next prime is 2192207. The reversal of 2192161 is 1612912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2047761 + 144400 = 1431^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2192161 - 2⁵ = 2192129 is a prime.

It is equal to p₁₆₂₁₄₈ and since 2192161 and 162148 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2192101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096080 + 1096081.

It is an arithmetic number, because the mean of its divisors is an integer number (1096081).

2^2192161 is an apocalyptic number.

It is an amenable number.

2192161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2192161 is an equidigital number, since it uses as much as digits as its factorization.

2192161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 22.

The square root of 2192161 is about 1480.5948129046. The cubic root of 2192161 is about 129.9044860539.

The spelling of 2192161 in words is "two million, one hundred ninety-two thousand, one hundred sixty-one".