91316525 has 6 divisors (see below), whose sum is σ = 113232522. Its totient is φ = 73053200.

The previous prime is 91316521. The next prime is 91316539. The reversal of 91316525 is 52561319.

It can be written as a sum of positive squares in 3 ways, for example, as 724201 + 90592324 = 851^2 + 9518^2 .

It is not a de Polignac number, because 91316525 - 2² = 91316521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91316491 and 91316500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91316521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1826306 + ... + 1826355.

It is an arithmetic number, because the mean of its divisors is an integer number (18872087).

Almost surely, 2^91316525 is an apocalyptic number.

It is an amenable number.

91316525 is a deficient number, since it is larger than the sum of its proper divisors (21915997).

91316525 is a wasteful number, since it uses less digits than its factorization.

91316525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652671 (or 3652666 counting only the distinct ones).

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

The square root of 91316525 is about 9555.9680305032. The cubic root of 91316525 is about 450.3150468726.

The spelling of 91316525 in words is "ninety-one million, three hundred sixteen thousand, five hundred twenty-five".