9161161 has 2 divisors, whose sum is σ = 9161162. Its totient is φ = 9161160.

The previous prime is 9161149. The next prime is 9161167. The reversal of 9161161 is 1611619.

9161161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 866761 = 2880^2 + 931^2 .

It is a cyclic number.

It is not a de Polignac number, because 9161161 - 2⁹ = 9160649 is a prime.

It is not a weakly prime, because it can be changed into another prime (9161167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4580580 + 4580581.

It is an arithmetic number, because the mean of its divisors is an integer number (4580581).

Almost surely, 2^9161161 is an apocalyptic number.

It is an amenable number.

9161161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9161161 is an equidigital number, since it uses as much as digits as its factorization.

9161161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 25.

The square root of 9161161 is about 3026.7409866059. The cubic root of 9161161 is about 209.2426308494.

The spelling of 9161161 in words is "nine million, one hundred sixty-one thousand, one hundred sixty-one".