445 = 5 x 89.
445 has two representations as a sum of two squares: 445 = 22 + 212 = 112 + 182.
445 is the hypotenuse of two primitive Pythagorean triples: 4452 = 842 + 4372 = 2032 + 3962.
445 is a divisor of 344 - 1.
445 has a base 10 representation (445) that is the reverse of its base 9 representation (544).