• Deleting all the even digits from 2150 we obtain a prime of 21 digits.
• 150 can be written using four 4's:
150 is nontrivially palindromic in base 4, base 7 and base 14.
150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
150 is an undulating number in base 7.
150 is a nontrivial repdigit in base 14.
It is a plaindrome in base 8, base 11 and base 14.
It is a nialpdrome in base 5, base 6, base 13, base 14, base 15 and base 16.
It is a zygodrome in base 5 and base 14.
It is a congruent number.
150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
150 is a wasteful number, since it uses less digits than its factorization.
150 is an evil number, because the sum of its binary digits is even.
The square root of 150 is about 12.2474487139. The cubic root of 150 is about 5.3132928459.
Subtracting from 150 its reverse (51), we obtain a palindrome (99).
The spelling of 150 in words is "one hundred fifty", and thus it is an aban number.