33091 has 2 divisors, whose sum is σ = 33092. Its totient is φ = 33090.

The previous prime is 33083. The next prime is 33107. The reversal of 33091 is 19033.

It is a happy number.

It is an a-pointer prime, because the next prime (33107) can be obtained adding 33091 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33091 - 2³ = 33083 is a prime.

33091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (33071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16545 + 16546.

It is an arithmetic number, because the mean of its divisors is an integer number (16546).

2³³⁰⁹¹ is an apocalyptic number.

33091 is a deficient number, since it is larger than the sum of its proper divisors (1).

33091 is an equidigital number, since it uses as much as digits as its factorization.

33091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 33091 is about 181.9093180681. The cubic root of 33091 is about 32.1047996369.

The spelling of 33091 in words is "thirty-three thousand, ninety-one".