91516325 has 6 divisors (see below), whose sum is σ = 113480274. Its totient is φ = 73213040.

The previous prime is 91516289. The next prime is 91516339. The reversal of 91516325 is 52361519.

It can be written as a sum of positive squares in 3 ways, for example, as 8031556 + 83484769 = 2834^2 + 9137^2 .

It is not a de Polignac number, because 91516325 - 2⁸ = 91516069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91516291 and 91516300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1830302 + ... + 1830351.

It is an arithmetic number, because the mean of its divisors is an integer number (18913379).

Almost surely, 2^91516325 is an apocalyptic number.

It is an amenable number.

91516325 is a deficient number, since it is larger than the sum of its proper divisors (21963949).

91516325 is a wasteful number, since it uses less digits than its factorization.

91516325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660663 (or 3660658 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 91516325 is about 9566.4165182162. The cubic root of 91516325 is about 450.6432364890.

The spelling of 91516325 in words is "ninety-one million, five hundred sixteen thousand, three hundred twenty-five".