using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        int n=1237621;

        List<int> numbers=new List<int>();

        Stack<int> stack=new Stack<int>();

        int counter=0;

        bool isCenterPassed=false;

        int res=n/10;

        int rem=n%10;

        numbers.Add(rem);

        while(res>0){

            rem=res%10;

            res=res/10;

            numbers.Add(rem);

        }

        foreach(var i in numbers){

            if(counter>=numbers.Count/2 && stack.Count>0){

                if(numbers.Count%2==1 && !isCenterPassed){                  

                    isCenterPassed=true;

                    continue;

                }

                else if(!isCenterPassed){

                    isCenterPassed=true;

                }

                if(isCenterPassed){

                    if(!(i==stack.Pop()))

                    {

                        Console.WriteLine(string.Format("{0} is not a palindrome number",n));

                        return;

                    }

                }               

            }

            else

            {

                stack.Push(i);

            }

                counter+=1;

        }

        Console.WriteLine(string.Format("{0} is a palindrome number",n));

    }

}