• 554 can be written using four 4's:
554 is nontrivially palindromic in base 11.
It is a semiprime because it is the product of two primes.
It is a magnanimous number.
554 is an undulating number in base 11.
It is a Curzon number.
It is a plaindrome in base 13, base 15 and base 16.
It is a nialpdrome in base 10.
554 is a wasteful number, since it uses less digits than its factorization.
554 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 279.
The square root of 554 is about 23.5372045919. The cubic root of 554 is about 8.2130270823.
Subtracting from 554 its product of digits (100), we obtain a palindrome (454).
Subtracting from 554 its reverse (455), we obtain a palindrome (99).
The spelling of 554 in words is "five hundred fifty-four", and thus it is an aban number.