diff --git a/Armstrong_number.py b/Armstrong_number.py
new file mode 100644
index 00000000000..be6ca4bd68d
--- /dev/null
+++ b/Armstrong_number.py
@@ -0,0 +1,12 @@
+#checking for armstrong number
+a=input('Enter a number')
+n=int(a)
+S=0
+while n>0:
+    d=n%10
+    S=S+d*d*d
+    n=n/10
+if int(a)==S:
+    print("Armstrong Number")
+else:
+    print("Not an Armstrong Number")