11591097 has 24 divisors (see below), whose sum is σ = 18604800. Its totient is φ = 6392736.

The previous prime is 11591089. The next prime is 11591113. The reversal of 11591097 is 79019511.

It is a happy number.

It is not a de Polignac number, because 11591097 - 2³ = 11591089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11591017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2904 + ... + 5622.

It is an arithmetic number, because the mean of its divisors is an integer number (775200).

Almost surely, 2^11591097 is an apocalyptic number.

It is an amenable number.

11591097 is a deficient number, since it is larger than the sum of its proper divisors (7013703).

11591097 is a wasteful number, since it uses less digits than its factorization.

11591097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2758 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 33.

The square root of 11591097 is about 3404.5700169037. The cubic root of 11591097 is about 226.3123113173.

The spelling of 11591097 in words is "eleven million, five hundred ninety-one thousand, ninety-seven".