91453697 has 2 divisors, whose sum is σ = 91453698. Its totient is φ = 91453696.

The previous prime is 91453679. The next prime is 91453699. The reversal of 91453697 is 79635419.

Together with previous prime (91453679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80982001 + 10471696 = 8999^2 + 3236^2 .

It is an emirp because it is prime and its reverse (79635419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91453697 - 2¹² = 91449601 is a prime.

Together with 91453699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91453699) 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 as a sum of consecutive naturals, namely, 45726848 + 45726849.

It is an arithmetic number, because the mean of its divisors is an integer number (45726849).

Almost surely, 2^91453697 is an apocalyptic number.

It is an amenable number.

91453697 is a deficient number, since it is larger than the sum of its proper divisors (1).

91453697 is an equidigital number, since it uses as much as digits as its factorization.

91453697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 44.

The square root of 91453697 is about 9563.1426320013. The cubic root of 91453697 is about 450.5404157626.

The spelling of 91453697 in words is "ninety-one million, four hundred fifty-three thousand, six hundred ninety-seven".