91359871 has 2 divisors, whose sum is σ = 91359872. Its totient is φ = 91359870.

The previous prime is 91359857. The next prime is 91359893. The reversal of 91359871 is 17895319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91359871 - 2⁵ = 91359839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91359811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45679935 + 45679936.

It is an arithmetic number, because the mean of its divisors is an integer number (45679936).

Almost surely, 2^91359871 is an apocalyptic number.

91359871 is a deficient number, since it is larger than the sum of its proper divisors (1).

91359871 is an equidigital number, since it uses as much as digits as its factorization.

91359871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 91359871 is about 9558.2357681740. The cubic root of 91359871 is about 450.3862872400.

The spelling of 91359871 in words is "ninety-one million, three hundred fifty-nine thousand, eight hundred seventy-one".