91095601 has 2 divisors, whose sum is σ = 91095602. Its totient is φ = 91095600.

The previous prime is 91095581. The next prime is 91095607. The reversal of 91095601 is 10659019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87909376 + 3186225 = 9376^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 91095601 - 2¹⁷ = 90964529 is a prime.

It is not a weakly prime, because it can be changed into another prime (91095607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45547800 + 45547801.

It is an arithmetic number, because the mean of its divisors is an integer number (45547801).

Almost surely, 2^91095601 is an apocalyptic number.

It is an amenable number.

91095601 is a deficient number, since it is larger than the sum of its proper divisors (1).

91095601 is an equidigital number, since it uses as much as digits as its factorization.

91095601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 91095601 is about 9544.4015527428. The cubic root of 91095601 is about 449.9516013792.

The spelling of 91095601 in words is "ninety-one million, ninety-five thousand, six hundred one".