91080133 has 4 divisors (see below), whose sum is σ = 92177568. Its totient is φ = 89982700.

The previous prime is 91080109. The next prime is 91080151. The reversal of 91080133 is 33108019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91080133 - 2⁹ = 91079621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91080098 and 91080107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91080163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548593 + ... + 548758.

It is an arithmetic number, because the mean of its divisors is an integer number (23044392).

Almost surely, 2^91080133 is an apocalyptic number.

It is an amenable number.

91080133 is a deficient number, since it is larger than the sum of its proper divisors (1097435).

91080133 is a wasteful number, since it uses less digits than its factorization.

91080133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097434.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 91080133 is about 9543.5912003815. The cubic root of 91080133 is about 449.9261327314.

The spelling of 91080133 in words is "ninety-one million, eighty thousand, one hundred thirty-three".