This number is a composite.
A 5-smooth number whose product of prime factors equals its sum of digits, i.e., 375 = 3*5^3 and 5*3 = 3+7+5. [Pfoertner]
A 5-smooth number whose product of prime factors equals its sum of digits, i.e., 375 = 3*5^3 and 5*3 = 3+7+5. [Pfoertner]