13500143 has 4 divisors (see below), whose sum is σ = 13651920. Its totient is φ = 13348368.

The previous prime is 13500133. The next prime is 13500163. The reversal of 13500143 is 34100531.

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 13500143 - 2¹⁴ = 13483759 is a prime.

It is a super-2 number, since 2×13500143² = 364507722040898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75755 + ... + 75932.

It is an arithmetic number, because the mean of its divisors is an integer number (3412980).

Almost surely, 2^13500143 is an apocalyptic number.

13500143 is a deficient number, since it is larger than the sum of its proper divisors (151777).

13500143 is an equidigital number, since it uses as much as digits as its factorization.

13500143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151776.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13500143 is about 3674.2540739584. The cubic root of 13500143 is about 238.1109985269.

Adding to 13500143 its reverse (34100531), we get a palindrome (47600674).

The spelling of 13500143 in words is "thirteen million, five hundred thousand, one hundred forty-three".