516

516 is a natural number that comes after 515 and before 517. In mathematics it appears in various contexts, serving as an example of a composite integer used in factorization and divisibility discussions.

In prime factorization, 516 = 2^2 × 3 × 43. It is even and composite, with divisors including 1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, and 516.

Representations of 516 include binary 1000000100 (base 2), hexadecimal 0x204, and Roman numerals DXVI (500 + 10 + 5 + 1). These forms reflect the number’s place in different numeral systems used in computing, programming, and historical notation.

Geographically, 516 is the telephone area code for Nassau County in New York, United States. It is part of the North American Numbering Plan and is associated with the western portion of Long Island.

Notes on its properties: 516 is not a prime, it is not a perfect square, and it is not a Fibonacci number. Its factors and representations make it a typical example of a mid-sized composite integer, useful for illustrating basic number theory concepts.