11559143 has 4 divisors (see below), whose sum is σ = 11598888. Its totient is φ = 11519400.

The previous prime is 11559137. The next prime is 11559157. The reversal of 11559143 is 34195511.

11559143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11559143 - 2⁴ = 11559127 is a prime.

It is a super-3 number, since 3×11559143³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11559173) 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, 19433 + ... + 20018.

It is an arithmetic number, because the mean of its divisors is an integer number (2899722).

Almost surely, 2^11559143 is an apocalyptic number.

11559143 is a deficient number, since it is larger than the sum of its proper divisors (39745).

11559143 is an equidigital number, since it uses as much as digits as its factorization.

11559143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39744.

The product of its digits is 2700, while the sum is 29.

The square root of 11559143 is about 3399.8739682524. The cubic root of 11559143 is about 226.1041561828.

The spelling of 11559143 in words is "eleven million, five hundred fifty-nine thousand, one hundred forty-three".