Q: Is 21,517,172 a Palindrome?
A: No, the number 21,517,172 is not a palindrome.
A palindromic number is number that remains the same when its digits are reversed.
Here's how to check if a number is a palindrome:
Step 1
Take the original number and reverse it.
Here is the original number color coded:
21517172
Now we reverse it like this:
27171512
Notice the colors are going in the opposite direction now
Step 2
Compare the two numbers. If they are exactly the same then the number is a palindrome.
Is 21517172 = 27171512?
Answer:
NO, so that means the number 21,517,172 is not a palindrome!
Here are more examples of potential palindrome numbers in sequence:
Number | 21,517,170 | 21,517,171 | 21,517,173 | 21,517,174 |
Palindrome? | no | no | no | no |