91716201 has 12 divisors (see below), whose sum is σ = 132745860. Its totient is φ = 61020960.

The previous prime is 91716187. The next prime is 91716239. The reversal of 91716201 is 10261719.

It can be written as a sum of positive squares in 2 ways, for example, as 35105625 + 56610576 = 5925^2 + 7524^2 .

It is not a de Polignac number, because 91716201 - 2⁶ = 91716137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91716281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5430 + ... + 14591.

It is an arithmetic number, because the mean of its divisors is an integer number (11062155).

Almost surely, 2^91716201 is an apocalyptic number.

It is an amenable number.

91716201 is a deficient number, since it is larger than the sum of its proper divisors (41029659).

91716201 is a wasteful number, since it uses less digits than its factorization.

91716201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20536 (or 20533 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 91716201 is about 9576.8575743821. The cubic root of 91716201 is about 450.9710733443.

The spelling of 91716201 in words is "ninety-one million, seven hundred sixteen thousand, two hundred one".