7851

7851 is the natural number that follows 7850 and precedes 7852. In decimal notation it is an odd composite number.

Its prime factorization is 7851 = 3 × 2617, where 2617 is prime. Therefore 7851 is a semiprime, the product of two primes. The positive divisors of 7851 are 1, 3, 2617, and 7851, giving it a divisor count of 4.

In decimal form its digits sum to 21, which explains its divisibility by 3. It is not a prime, nor is it a perfect power, and it has no widely recognized status as a special constant or sequence beyond its role as an example of a semiprime.

7851 can be expressed in other bases as well: in binary it is 1111010101011, in hexadecimal it is 0x1EAB, and in octal it is 17253. These representations illustrate common base conversions used in computing and number theory.

Outside of numerical context, 7851 may occur as an identifier or code in various applications, such as catalog numbers, model designations, or reference numbers. As a plain integer, it is primarily of interest for its factorization, base representations, and role as a concrete example of a semiprime.