Katy Perry's "Part Of Me" enters this week's Billboard Hot 100 at # 1, becoming only the 20th song in the chart's 53-year history to do so.

A complete list of the 20 songs to debut at # 1 on the Hot 100:

1. Michael Jackson - "You Are Not Alone."
Chart Debut Date: September 2, 1995

2. Mariah Carey - "Fantasy"
Chart Debut Date: September 30, 1995

3. Whitney Houston - "Exhale (Shoop Shoop)"
Chart Debut Date: November 25, 1995

4. Mariah Carey & Boyz II Men - "One Sweet Day"
Chart Debut Date: December 2, 1995

5. Puff Daddy & Faith Evans feat. 112 - "I'll Be Missing You"
Chart Debut Date: June 14, 1997

6. Mariah Carey - "Honey"
Chart Debut Date: September 13, 1997

7. Elton John - "Candle In The Wind 1997/ The Way You Look Tonight"
Chart Debut Date: October 11, 1997

8. Celine Dion - "My Heart Will Go On"
Chart Debut Date: February 28, 1998

9. Aerosmith - "I Don't Want To Miss A Thing"
Chart Debut Date: September 5, 1998

10. Lauryn Hill - "Doo Wop (That Thing)"
Chart Debut Date: November 14, 1998

11. Clay Aiken - "This Is The Night"
Chart Debut Date: June 28, 2003

12. Fantasia - "I Believe"
Chart Debut Date: July 10, 2004

13. Carrie Underwood - "Inside Your Heaven"
Chart Debut Date: July 2, 2005

14. Taylor Hicks - "Do I Make You Proud"
Chart Debut Date: July 1, 2006

15. Britney Spears - "3"
Chart Debut Date: October 24, 2009

16. Eminem - "Not Afraid"
Chart Debut Date: May 22, 2010

17. Ke$ha - "We R Who We R"
Chart Debut Date: November 13, 2010

18. Britney Spears - "Hold It Against Me"
Chart Debut Date: January 29, 2011

19. Lady Gaga - "Born This Way"
Chart Debut Date: February 26, 2011

20. Katy Perry - "Part Of Me"
Chart Debut Date: March 3, 2012

It is of note that Mariah holds three of the 20 songs to debut at # 1 (three of the first six, at that!). The only other artist to have more than one song debut at # 1 is Britney Spears.

Source: MariahDailyJournal | Billboard Chart Beat