5 random chart facts of the week that might amaze you

Rihanna joins the top flight, Demi rises, and Jessica Simpson goes public in our roundup of chart quirks.

You should never say not to knowing more stuff. Here are five fast fact from this week's Official Chart.

1. Rihanna's ninth trip to the top

Topping the Official Singles Chart this week is DJ Khaled's Wild Thoughts, featuring Rihanna and Bryson Tiller. It's a second chart-topper for DJ Khaled, who took I'm The One all the way back in May, but even more impressive is that this is Rihanna's ninth appearance on a Number 1 single. She is now one of 10 acts to enjoy nine chart-toppers, level-pegging with Abba and the Spice Girls.

MORE: Look back at Rihanna's Number 1s and more in her Official Chart archive

2. Demi is on her way up

Biggest climb in this week's chart goes to Demi Lovato, who is unapologetically trampling over her rivals with Sorry Not Sorry. The track zooms 42 slots to break into the Top 40 at 27.

3. Rains that made a splash

The Script have a new entry at 26 with Rain, which is the fifth song called Rain to make the Top 40 – although there are plenty of others to contain the word in the title. The highest charting songs called Rain both got to Number 7 – one was Madonna's, from 1993, while 17 years earlier Status Quo had a hit with Rain too. They are both very different songs, FYI.

MORE: See every song to contain the word "rain" to make the Top 100

4. Vamping it up

Congrats to the Vamps, who score their first Number 1 album with Night and Day! They also top the Record Store Chart, which measures what's popular in independent record shops. Slightly interesting fact: aside from La La Land's cast recording, all this year's Number 1 albums so far have come from British acts.

MORE: See all the Official Albums Chart Number 1s of the year

5. Ask Official Charts

Every week we like to check in on an old track to see how it's doing, and we like it even better when we get a request. Chart fan Shane sent us an email to ask how Jessica Simpson's iconic rollerskating anthem A Public Affair was selling. With a star-studded video and more hooks than a cloakroom, A Public Affair reached Number 20 in February 2007, selling 25,800 to date. so far in 2017, it's shifted 46 downloads (2 this week) and notched up 31,000 streams (1,009 of those in the last seven days). Clearly some excellent pop taste out there!