153 = 32 x 17.
153 is the 17th triangular number. It is also a hexagonal number.
153 = 1! + 2! + 3! + 4! + 5!
153 is palindromic in base 2 (binary): 10011001. It is 2121 in base 4 and 99 in base 16.
153 is the smallest number greater than 1 such that the sum of the cubes of its digits equals itself: 153 = 13 + 53 + 33.
153 has a representation as a sum of two squares: 153 = 32 + 122.
