91161151 has 2 divisors, whose sum is σ = 91161152. Its totient is φ = 91161150.

The previous prime is 91161149. The next prime is 91161209. The reversal of 91161151 is 15116119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91161151 - 2¹ = 91161149 is a prime.

Together with 91161149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91161131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45580575 + 45580576.

It is an arithmetic number, because the mean of its divisors is an integer number (45580576).

Almost surely, 2^91161151 is an apocalyptic number.

91161151 is a deficient number, since it is larger than the sum of its proper divisors (1).

91161151 is an equidigital number, since it uses as much as digits as its factorization.

91161151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 25.

The square root of 91161151 is about 9547.8348854596. The cubic root of 91161151 is about 450.0594999514.

The spelling of 91161151 in words is "ninety-one million, one hundred sixty-one thousand, one hundred fifty-one".