Subtracting from 159 its sum of digits (15), we obtain a square (144 = 122).
159 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.
It is a cyclic number.
It is a D-number.
159 is a lucky number.
It is a straight-line number, since its digits are in arithmetic progression.
It is a plaindrome in base 5, base 8, base 10, base 11, base 12 and base 16.
It is a nialpdrome in base 13, base 14 and base 15.
It is a congruent number.
Being equal to 5×25-1, it is a Woodall number.
It is an upside-down number.
159 is an equidigital number, since it uses as much as digits as its factorization.
159 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56.
The square root of 159 is about 12.6095202129. The cubic root of 159 is about 5.4175015150.
The spelling of 159 in words is "one hundred fifty-nine", and thus it is an aban number.