159

159 is: the sum of 3 consecutive prime numbers: 47 + 53 + 59. a Woodall number. equal to the sum of the squares of the digits of its own square in base 15. Only 5 numbers (greater than 1) have this property in base 15, none in base 10. written CLIX in Roman numeral, which spells a proper noun with multiple meanings. Given 159, the Mertens function returns 0