1. It is an abundant number.
2. It is the smallest number that can be written as the sum of 3 squares in 3 different ways.
54 = 7^2 + 1^2 + 2^2 = 6^2 + 3^2 + 3^2 = 5^2 + 5^2 + 2^2
3. It is the sum of first 9 natural numbers starting from 2.
2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 54
4. There are 54 coloured squares on a standard Rubik’s cube. Each of 6 faces has 9 squares. This was invented by Hungarian Sculptor Erno Rubik in 1974.
5. It is a Leyland number. A Leyland number is written in the form of x^y + y^x where x and y are integers greater than 1. The first few Leyland numbers are --- 8, 17, 32, 54, 57---
6. The atomic number of Xenon is 54.
7. It is a Harshad number because it is divisible by the sum of its digits.
8. It is a 19- gonal number.
Dr Rajesh Kumar Thakur
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