159161 has 2 divisors, whose sum is σ = 159162. Its totient is φ = 159160.

The previous prime is 159157. The next prime is 159167. The reversal of 159161 is 161951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 3136 = 395^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 159161 - 2² = 159157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159161.

It is not a weakly prime, because it can be changed into another prime (159167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79580 + 79581.

It is an arithmetic number, because the mean of its divisors is an integer number (79581).

2¹⁵⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

159161 is a deficient number, since it is larger than the sum of its proper divisors (1).

159161 is an equidigital number, since it uses as much as digits as its factorization.

159161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 23.

The square root of 159161 is about 398.9498715378. The cubic root of 159161 is about 54.1932944687.

The spelling of 159161 in words is "one hundred fifty-nine thousand, one hundred sixty-one".