Mambo No. 5 the song debuted at number one on the UK Singles Chart, becoming Bob the Builder's second number-one single there after "Can We Fix It?". The song experienced major success in Australia and Ireland. In the former country, the song debuted at number three on the ARIA Singles Chart on 4 November 2001 and reached number two on 18 November, held off the top spot by Alien Ant Farm's cover of "Smooth Criminal". After staying at number two for another week, the song began to leave the chart, spending nine more weeks in the top 50. In Ireland, the song first
Lists of UK Singles Chart number ones with 11 songs topping the chart, just ahead of 1956, 1962 and 1992, with 12. The act that has achieved the most number ones is American entertainer Elvis Presley, who has topped the chart 21 times – Presley's second number one, "Jailhouse Rock" was the first single ever to debut at the top of the chart. The most successful band are The Beatles, who have achieved 17 number ones on the chart. The Beatles' first chart-topper, "From Me to You", reached number one in May 1963. In the 1970s the required number of sales needed to top the chart was