91080233 has 2 divisors, whose sum is σ = 91080234. Its totient is φ = 91080232.

The previous prime is 91080193. The next prime is 91080257. The reversal of 91080233 is 33208019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90573289 + 506944 = 9517^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 91080233 - 2¹⁶ = 91014697 is a prime.

It is not a weakly prime, because it can be changed into another prime (91080293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45540116 + 45540117.

It is an arithmetic number, because the mean of its divisors is an integer number (45540117).

Almost surely, 2^91080233 is an apocalyptic number.

It is an amenable number.

91080233 is a deficient number, since it is larger than the sum of its proper divisors (1).

91080233 is an equidigital number, since it uses as much as digits as its factorization.

91080233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 91080233 is about 9543.5964394981. The cubic root of 91080233 is about 449.9262973944.

The spelling of 91080233 in words is "ninety-one million, eighty thousand, two hundred thirty-three".