11591465 has 4 divisors (see below), whose sum is σ = 13909764. Its totient is φ = 9273168.

The previous prime is 11591453. The next prime is 11591473. The reversal of 11591465 is 56419511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56419511 = 71 ⋅794641.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 4214809 = 2716^2 + 2053^2 .

It is a cyclic number.

It is not a de Polignac number, because 11591465 - 2⁶ = 11591401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1159142 + ... + 1159151.

It is an arithmetic number, because the mean of its divisors is an integer number (3477441).

Almost surely, 2^11591465 is an apocalyptic number.

It is an amenable number.

11591465 is a deficient number, since it is larger than the sum of its proper divisors (2318299).

11591465 is an equidigital number, since it uses as much as digits as its factorization.

11591465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318298.

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

The square root of 11591465 is about 3404.6240614787. The cubic root of 11591465 is about 226.3147063178.

The spelling of 11591465 in words is "eleven million, five hundred ninety-one thousand, four hundred sixty-five".