91165043 has 2 divisors, whose sum is σ = 91165044. Its totient is φ = 91165042.

The previous prime is 91165037. The next prime is 91165121. The reversal of 91165043 is 34056119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91165043 - 2⁶ = 91164979 is a prime.

It is a super-2 number, since 2×91165043² = 16622130130383698, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 91164997 and 91165015.

It is not a weakly prime, because it can be changed into another prime (91165843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45582521 + 45582522.

It is an arithmetic number, because the mean of its divisors is an integer number (45582522).

Almost surely, 2^91165043 is an apocalyptic number.

91165043 is a deficient number, since it is larger than the sum of its proper divisors (1).

91165043 is an equidigital number, since it uses as much as digits as its factorization.

91165043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 91165043 is about 9548.0386991256. The cubic root of 91165043 is about 450.0659047507.

The spelling of 91165043 in words is "ninety-one million, one hundred sixty-five thousand, forty-three".