2855

2855 is a natural number that comes after 2854 and before 2856. It is odd and composite. The prime factorization is 5 × 571, with 571 prime, so 2855 is a semiprime. Its divisors are 1, 5, 571, and 2855.

In different numeral systems, 2855 is represented as 101100100111 in binary and B27 in hexadecimal; in Roman numerals it is MMDCCCLV. In decimal form, the standard written form is two thousand eight hundred fifty-five.

As a semiprime, 2855 has exactly four positive divisors. It is not a prime, nor a perfect square, and it is not divisible by 2, 3, or 4. Its divisibility by 5 is due to its ending digit, while 571 is a prime factor that contributes the remaining multiplication. In mathematical contexts, 2855 serves as an example of a product of two distinct primes and as a compact illustration of semiprime properties.