91127017 has 2 divisors, whose sum is σ = 91127018. Its totient is φ = 91127016.

The previous prime is 91126993. The next prime is 91127027. The reversal of 91127017 is 71072119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78481881 + 12645136 = 8859^2 + 3556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91127017 is a prime.

It is not a weakly prime, because it can be changed into another prime (91127027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45563508 + 45563509.

It is an arithmetic number, because the mean of its divisors is an integer number (45563509).

Almost surely, 2^91127017 is an apocalyptic number.

It is an amenable number.

91127017 is a deficient number, since it is larger than the sum of its proper divisors (1).

91127017 is an equidigital number, since it uses as much as digits as its factorization.

91127017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 91127017 is about 9546.0471924247. The cubic root of 91127017 is about 450.0033201401.

It can be divided in two parts, 9112 and 7017, that added together give a square (16129 = 127²).

The spelling of 91127017 in words is "ninety-one million, one hundred twenty-seven thousand, seventeen".