Check whether the binary representation of a given number is a palindrome or not in Python

Python program to convert a given decimal number (P) to binary number

# input the number
P=int(input('Enter a number: '))

# convert into binary number
s=int(bin(P)[2:]) 

# printing the result
print("The binary representation of number:", s)

Output

RUN 1:
Enter a number: 17
The binary representation of number: 10001

RUN 2:
Enter a number: 100
The binary representation of number: 1100100

As we have learned how to convert a decimal number into a binary number in the above program and the binary representation of 90 is not a palindrome and this is our main task to check palindrome using Python. Now, we can easily solve it. So, let’s start writing the program to check the binary representation of the given number is a palindrome or not in Python.

Program:

# input the number
P=int(input('Enter a number: '))

# converting to binary
s=int(bin(P)[2:])

# reversing the binary 
r=str(s)[::-1] 

# checking the palindrome
if int(r)==s:
    print("The binary representation of the number is a palindrome.")
else:
    print("The binary representation of the number is not a palindrome.")

Output

RUN 1:
Enter a number: 27
The binary representation of the number is a palindrome.

RUN 2:
Enter a number: 100
The binary representation of the number is not a palindrome.

In Python, str(P)[::-1] is used to reverse a number P which is a property of slicing.