91163 has 2 divisors, whose sum is σ = 91164. Its totient is φ = 91162.

The previous prime is 91159. The next prime is 91183. The reversal of 91163 is 36119.

It is an a-pointer prime, because the next prime (91183) can be obtained adding 91163 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91163 - 2² = 91159 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45581 + 45582.

It is an arithmetic number, because the mean of its divisors is an integer number (45582).

2⁹¹¹⁶³ is an apocalyptic number.

91163 is a deficient number, since it is larger than the sum of its proper divisors (1).

91163 is an equidigital number, since it uses as much as digits as its factorization.

91163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

The square root of 91163 is about 301.9321115748. The cubic root of 91163 is about 45.0062542747.

It can be divided in two parts, 9116 and 3, that added together give a palindrome (9119).

The spelling of 91163 in words is "ninety-one thousand, one hundred sixty-three".