def armstrong_num(y):
    sum=0
    chk=y
    while chk>0:
        digit=chk%10
        sum+=digit**3
        chk//=10
    if y==sum:
        print(y,"is an Armstrong number")
    else:
             print(y,"is  NOT an Armstrong number")
    
armstrong_num(153)
        

153 is an Armstrong number

def armstrong_num(y):
    sum=0
    chk=y
    while chk>0:
        digit=chk%10
        sum+=digit**3
        chk//=10
    if y==sum:
        print(y,"is an Armstrong number")
    else:
             print(y,"is  NOT an Armstrong number")
    
armstrong_num(163)

163 is  NOT an Armstrong number