91313757 has 16 divisors (see below), whose sum is σ = 135657280. Its totient is φ = 60705936.

The previous prime is 91313707. The next prime is 91313759. The reversal of 91313757 is 75731319.

It is not a de Polignac number, because 91313757 - 2⁸ = 91313501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91313759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5538 + ... + 14604.

It is an arithmetic number, because the mean of its divisors is an integer number (8478580).

Almost surely, 2^91313757 is an apocalyptic number.

It is an amenable number.

91313757 is a deficient number, since it is larger than the sum of its proper divisors (44343523).

91313757 is a wasteful number, since it uses less digits than its factorization.

91313757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9443 counting only the distinct ones).

The product of its digits is 19845, while the sum is 36.

The square root of 91313757 is about 9555.8231984482. The cubic root of 91313757 is about 450.3104968212.

The spelling of 91313757 in words is "ninety-one million, three hundred thirteen thousand, seven hundred fifty-seven".