11115589 has 4 divisors (see below), whose sum is σ = 11700640. Its totient is φ = 10530540.

The previous prime is 11115583. The next prime is 11115593. The reversal of 11115589 is 98551111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11115589 - 2⁵ = 11115557 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11115589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115583) 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 in 3 ways as a sum of consecutive naturals, for example, 292497 + ... + 292534.

It is an arithmetic number, because the mean of its divisors is an integer number (2925160).

Almost surely, 2^11115589 is an apocalyptic number.

11115589 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11115589 is a deficient number, since it is larger than the sum of its proper divisors (585051).

11115589 is an equidigital number, since it uses as much as digits as its factorization.

11115589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585050.

The product of its digits is 1800, while the sum is 31.

The square root of 11115589 is about 3334.0049490065. The cubic root of 11115589 is about 223.1742891317.

It can be divided in two parts, 11 and 115589, that added together give a square (115600 = 340²).

The spelling of 11115589 in words is "eleven million, one hundred fifteen thousand, five hundred eighty-nine".