91506353 has 2 divisors, whose sum is σ = 91506354. Its totient is φ = 91506352.

The previous prime is 91506343. The next prime is 91506367. The reversal of 91506353 is 35360519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89718784 + 1787569 = 9472^2 + 1337^2 .

It is an emirp because it is prime and its reverse (35360519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91506353 - 2⁸ = 91506097 is a prime.

It is not a weakly prime, because it can be changed into another prime (91506313) 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, 45753176 + 45753177.

It is an arithmetic number, because the mean of its divisors is an integer number (45753177).

Almost surely, 2^91506353 is an apocalyptic number.

It is an amenable number.

91506353 is a deficient number, since it is larger than the sum of its proper divisors (1).

91506353 is an equidigital number, since it uses as much as digits as its factorization.

91506353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 91506353 is about 9565.8953057202. The cubic root of 91506353 is about 450.6268679064.

The spelling of 91506353 in words is "ninety-one million, five hundred six thousand, three hundred fifty-three".