CLXV

CLXV is the Roman numeral for the number 165. In Roman numerals, CLXV is composed of C (100), L (50), X (10), and V (5). The value is obtained by summing these values: 100 + 50 + 10 + 5 = 165. There is no subtractive pair in this form, which makes CLXV a straightforward additive representation.

In usage, CLXV appears in contexts that employ Roman numerals, such as clock faces, commemorative inscriptions, and enumerations in historical texts. It can designate a quantity, a year in the early Common Era (165 CE) or a catalog or chapter designation, depending on the conventions of the source.

From a mathematical perspective, 165 is a composite number with prime factorization 3 × 5 × 11. It is divisible by 3, 5, and 11, and by their products as well (e.g., 15, 33, and 165). It is not a prime, a square, or a cube. Its divisors include 1, 3, 5, 11, 15, 33, 55, and 165.

Beyond numeration, CLXV may appear as an alphanumeric designation in catalogs, product codes, or model numbers. In such cases, its meaning derives from the specific naming or coding system rather than its mathematical value.

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