11550143 has 4 divisors (see below), whose sum is σ = 12600168. Its totient is φ = 10500120.

The previous prime is 11550137. The next prime is 11550169. The reversal of 11550143 is 34105511.

11550143 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, and also an emirpimes, since its reverse is a distinct semiprime: 34105511 = 11 ⋅3100501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11550143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524996 + ... + 525017.

It is an arithmetic number, because the mean of its divisors is an integer number (3150042).

Almost surely, 2^11550143 is an apocalyptic number.

11550143 is a deficient number, since it is larger than the sum of its proper divisors (1050025).

11550143 is a wasteful number, since it uses less digits than its factorization.

11550143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050024.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 11550143 is about 3398.5501320416. The cubic root of 11550143 is about 226.0454590467.

Adding to 11550143 its reverse (34105511), we get a palindrome (45655654).

The spelling of 11550143 in words is "eleven million, five hundred fifty thousand, one hundred forty-three".