91080953 has 2 divisors, whose sum is σ = 91080954. Its totient is φ = 91080952.

The previous prime is 91080947. The next prime is 91081021. The reversal of 91080953 is 35908019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85525504 + 5555449 = 9248^2 + 2357^2 .

It is a cyclic number.

It is not a de Polignac number, because 91080953 - 2⁴ = 91080937 is a prime.

It is not a weakly prime, because it can be changed into another prime (91080853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45540476 + 45540477.

It is an arithmetic number, because the mean of its divisors is an integer number (45540477).

Almost surely, 2^91080953 is an apocalyptic number.

It is an amenable number.

91080953 is a deficient number, since it is larger than the sum of its proper divisors (1).

91080953 is an equidigital number, since it uses as much as digits as its factorization.

91080953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 91080953 is about 9543.6341610521. The cubic root of 91080953 is about 449.9274829648.

The spelling of 91080953 in words is "ninety-one million, eighty thousand, nine hundred fifty-three".