Fifty five is the square pyramidal number and also a triangular number (sum of 1 to 10). The square root of the palindrome number 55 is approximately equal to 7.416
Fifty five is the square pyramidal number and also a triangular number (sum of 1 to 10). The square root of the palindrome number 55 is approximately equal to 7.416
The nearest previous perfect square is 49 and the nearest next perfect square is 64 .
