The number "55" is an integer that follows 54 and precedes 56. It is an odd number and can be expressed as the sum of the first ten positive integers: 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55. In Roman numerals, it is represented as LV. In mathematics, 55 is known as a Fibonacci number, appearing in the sequence where each number is the sum of the two preceding ones. The sequence starts with 0 and 1, leading to 1, 2, 3, 5, 8, 13, 21, 34, 55, and so on. Additionally, 55 is often used in various contexts, such as sports jersey numbers and street addresses.