91965233 has 4 divisors (see below), whose sum is σ = 92000868. Its totient is φ = 91929600.

The previous prime is 91965221. The next prime is 91965241. The reversal of 91965233 is 33256919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33256919 = 23 ⋅1445953.

It can be written as a sum of positive squares in 2 ways, for example, as 53114944 + 38850289 = 7288^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 91965233 - 2¹⁰ = 91964209 is a prime.

It is a super-3 number, since 3×91965233³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91965283) 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, 13616 + ... + 19217.

It is an arithmetic number, because the mean of its divisors is an integer number (23000217).

Almost surely, 2^91965233 is an apocalyptic number.

It is an amenable number.

91965233 is a deficient number, since it is larger than the sum of its proper divisors (35635).

91965233 is a wasteful number, since it uses less digits than its factorization.

91965233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35634.

The product of its digits is 43740, while the sum is 38.

The square root of 91965233 is about 9589.8505202115. The cubic root of 91965233 is about 451.3788701997.

The spelling of 91965233 in words is "ninety-one million, nine hundred sixty-five thousand, two hundred thirty-three".