1. The number of playing cards is 52. It contains 4 suits (Heart, Diamond, Clubs, and Spades) each of 13 in numbers. The 52 cards have 26 Black and 26 Red Cards. 4 kings, 4 queens, and 4 ace are known as ace cards.
2. It is the sum of two consecutive primes.
52 = 23 + 29
3. A piano has 52 white keys.
4. It is the sum of 6 Fibonacci number starting from the 3rd.
52 = 2 + 3 + 5 + 8 + 13 + 21
5. A year has 52 weeks.
6. It is a 6th Bell number. Bell numbers are named after the mathematician Eric Temple Bell. It is the number of partitions of a set with n members or the number of equivalence relation on it. The first 6 Bell numbers are –
1, 1, 2, 5, 15, 52---
The Bell numbers can be generated by the following table, which works kind of like Pascal's Triangle.
7. It is a decagonal number.
8. It is a 3rd Untouchable number. An untouchable number is a positive integer that can’t be expressed as the sum of all the proper divisors of any positive integer including the untouchable number itself. The first few untouchable numbers are 2, 5, 52, 88---
9. The atomic number of Tellurium is 52.
Dr Rajesh Kumar Thakur
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