91087033 has 2 divisors, whose sum is σ = 91087034. Its totient is φ = 91087032.

The previous prime is 91087001. The next prime is 91087039. The reversal of 91087033 is 33078019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54641664 + 36445369 = 7392^2 + 6037^2 .

It is a cyclic number.

It is not a de Polignac number, because 91087033 - 2⁵ = 91087001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91086986 and 91087004.

It is not a weakly prime, because it can be changed into another prime (91087039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45543516 + 45543517.

It is an arithmetic number, because the mean of its divisors is an integer number (45543517).

Almost surely, 2^91087033 is an apocalyptic number.

It is an amenable number.

91087033 is a deficient number, since it is larger than the sum of its proper divisors (1).

91087033 is an equidigital number, since it uses as much as digits as its factorization.

91087033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 91087033 is about 9543.9526926740. The cubic root of 91087033 is about 449.9374941989.

The spelling of 91087033 in words is "ninety-one million, eighty-seven thousand, thirty-three".