91033 has 2 divisors, whose sum is σ = 91034. Its totient is φ = 91032.

The previous prime is 91019. The next prime is 91079. The reversal of 91033 is 33019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85849 + 5184 = 293^2 + 72^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91033 is a prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 90998 and 91016.

It is not a weakly prime, because it can be changed into another prime (91433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45516 + 45517.

It is an arithmetic number, because the mean of its divisors is an integer number (45517).

2⁹¹⁰³³ is an apocalyptic number.

It is an amenable number.

91033 is a deficient number, since it is larger than the sum of its proper divisors (1).

91033 is an equidigital number, since it uses as much as digits as its factorization.

91033 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 91033 is about 301.7167545895. The cubic root of 91033 is about 44.9848508677.

The spelling of 91033 in words is "ninety-one thousand, thirty-three".