51213

51213 is a natural number that lies between 51212 and 51214. It is an odd, composite integer with prime factorization 3 × 43 × 397, which makes it square-free since all prime factors are distinct.

The number is divisible by 3, as indicated by the sum of its digits (5 + 1 + 2 + 1 + 3 = 12). Its prime factorization shows that it has exactly three prime factors. In modular terms, 51213 is congruent to 0 modulo 3 and has a digital root of 3.

In common base representations, 51213 is written as 1100100000001101 in binary and as 0xC80D in hexadecimal. These representations reflect its composition from powers of two and of sixteen, respectively.

Digit properties include a digit sum of 12 and a digital root of 3. The number is not prime, and its factorization into 3, 43, and 397 provides insight into its divisibility features and potential appearances in problems involving factorization, modular arithmetic, or combinatorial counting where distinct prime factors are relevant.

Beyond pure mathematics, 51213 may appear as a numeric label or identifier in various non-mathematical contexts, such as cataloguing systems or serial numbers, though no single widely recognized meaning is attached to the sequence itself.