91133361 has 12 divisors (see below), whose sum is σ = 143604240. Its totient is φ = 55232280.

The previous prime is 91133353. The next prime is 91133363. The reversal of 91133361 is 16333119.

It is not a de Polignac number, because 91133361 - 2³ = 91133353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91133363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460171 + ... + 460368.

It is an arithmetic number, because the mean of its divisors is an integer number (11967020).

Almost surely, 2^91133361 is an apocalyptic number.

It is an amenable number.

91133361 is a deficient number, since it is larger than the sum of its proper divisors (52470879).

91133361 is a wasteful number, since it uses less digits than its factorization.

91133361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920556 (or 920553 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 91133361 is about 9546.3794707732. The cubic root of 91133361 is about 450.0137625421.

The spelling of 91133361 in words is "ninety-one million, one hundred thirty-three thousand, three hundred sixty-one".