XLV is the Roman numeral representation for the number 45. In Roman numerals, "X" stands for 10, "L" represents 50, and "V" signifies 5. Therefore, XLV is calculated as 50 (L) minus 10 (X), resulting in 40, plus 5 (V), which equals 45. In various contexts, XLV can refer to different subjects. For example, it is the name of the XLV ETF, an exchange-traded fund that focuses on the healthcare sector. Additionally, XLV is sometimes used in popular culture, such as in the title of songs or movies, where it may symbolize themes of age or experience.