91770133 has 16 divisors (see below), whose sum is σ = 118894720. Its totient is φ = 68786496.

The previous prime is 91770103. The next prime is 91770139. The reversal of 91770133 is 33107719.

It is a cyclic number.

It is not a de Polignac number, because 91770133 - 2¹³ = 91761941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91770095 and 91770104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91770139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24810 + ... + 28267.

It is an arithmetic number, because the mean of its divisors is an integer number (7430920).

Almost surely, 2^91770133 is an apocalyptic number.

It is an amenable number.

91770133 is a deficient number, since it is larger than the sum of its proper divisors (27124587).

91770133 is a wasteful number, since it uses less digits than its factorization.

91770133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53116.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 91770133 is about 9579.6729067333. The cubic root of 91770133 is about 451.0594510642.

The spelling of 91770133 in words is "ninety-one million, seven hundred seventy thousand, one hundred thirty-three".