91151 has 2 divisors, whose sum is σ = 91152. Its totient is φ = 91150.

The previous prime is 91141. The next prime is 91153. The reversal of 91151 is 15119.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91151 - 2¹⁰ = 90127 is a prime.

Together with 91153, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a zygodrome in base 3.

It is a congruent number.

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, 45575 + 45576.

It is an arithmetic number, because the mean of its divisors is an integer number (45576).

2⁹¹¹⁵¹ is an apocalyptic number.

91151 is a deficient number, since it is larger than the sum of its proper divisors (1).

91151 is an equidigital number, since it uses as much as digits as its factorization.

91151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45, while the sum is 17.

The square root of 91151 is about 301.9122389040. The cubic root of 91151 is about 45.0042794284.

It can be divided in two parts, 91 and 151, that added together give a palindrome (242).

The spelling of 91151 in words is "ninety-one thousand, one hundred fifty-one".