MasterNumbers

private static bool IsSymmetrical(ulong number)
        {
            string num = number.ToString();
            int min = 0;
            int max = num.Length - 1;
            while (min < max)
            {
                if (char.ToLower(num[min]) != char.ToLower(num[max]))
                {
                    return false;
                }
                min++;
                max--;
            }
            return true;
        }