911161 has 2 divisors, whose sum is σ = 911162. Its totient is φ = 911160.

The previous prime is 911159. The next prime is 911167. The reversal of 911161 is 161119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 197136 = 845^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 911161 - 2¹ = 911159 is a prime.

Together with 911159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (911167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455580 + 455581.

It is an arithmetic number, because the mean of its divisors is an integer number (455581).

2⁹¹¹¹⁶¹ is an apocalyptic number.

It is an amenable number.

911161 is a deficient number, since it is larger than the sum of its proper divisors (1).

911161 is an equidigital number, since it uses as much as digits as its factorization.

911161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 19.

The square root of 911161 is about 954.5475367943. The cubic root of 911161 is about 96.9464046575.

The spelling of 911161 in words is "nine hundred eleven thousand, one hundred sixty-one".