91130585 has 32 divisors (see below), whose sum is σ = 137168640. Its totient is φ = 56579328.

The previous prime is 91130581. The next prime is 91130587. The reversal of 91130585 is 58503119.

It is not a de Polignac number, because 91130585 - 2² = 91130581 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91130581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22226 + ... + 26004.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^91130585 is an apocalyptic number.

It is an amenable number.

91130585 is a deficient number, since it is larger than the sum of its proper divisors (46038055).

91130585 is a wasteful number, since it uses less digits than its factorization.

91130585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 91130585 is about 9546.2340742305. The cubic root of 91130585 is about 450.0091932278.

The spelling of 91130585 in words is "ninety-one million, one hundred thirty thousand, five hundred eighty-five".