91349573 has 12 divisors (see below), whose sum is σ = 106617132. Its totient is φ = 78039360.

The previous prime is 91349563. The next prime is 91349617. The reversal of 91349573 is 37594319.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 53919649 = 6118^2 + 7343^2 .

It is not a de Polignac number, because 91349573 - 2⁸ = 91349317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91349573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91349563) 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 11 ways as a sum of consecutive naturals, for example, 12593 + ... + 18473.

It is an arithmetic number, because the mean of its divisors is an integer number (8884761).

Almost surely, 2^91349573 is an apocalyptic number.

It is an amenable number.

91349573 is a deficient number, since it is larger than the sum of its proper divisors (15267559).

91349573 is a wasteful number, since it uses less digits than its factorization.

91349573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212 (or 6205 counting only the distinct ones).

The product of its digits is 102060, while the sum is 41.

The square root of 91349573 is about 9557.6970552534. The cubic root of 91349573 is about 450.3693642291.

The spelling of 91349573 in words is "ninety-one million, three hundred forty-nine thousand, five hundred seventy-three".