555 (telephone number)

555 is a special phone number that is used in movies, TV shows, and commercials when they need a phone number for a character or business that is not real. It's kind of like a pretend phone number. When you see someone dial a phone number in a movie or TV show, and they use the numbers 555, you'll know that it's not a real number you can call. This helps protect people's privacy and prevents real phone numbers from being used without permission. So, even though 555 might look like a real phone number, it's not!