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Just use the basic definition of "abundant" and "deficient". That is, calculate all the factors of 50 (excluding 50 itself), add them up, then compare whether the result is more or less than 50.
Add up its proper divisors and see. 25 + 10 + 5 + 2 + 1 = 43 which is less that 50, so this number is deficient.
No, it is not.
6 and 28 are perfect numbers less than 50.
There are 24 perfect squares between 50 and 1000.
The only perfect number between 20 and 50 is 28.
2500 is a perfect square number, it can be written as 50*50.
No, it is not near a perfect number. The first four known perfect numbers are 6, 28, 496 and 8,128.
No, it is not near a perfect number. The first four known perfect numbers are 6, 28, 496 and 8,128.
No, the only perfect numbers under 100 are 6 and 28.
No, it is not. A perfect square is the product of two equal integers; i.e. 9 is a perfect square. It can be expressed as 3*3. There is no number that when multiplied twice equals 50.
50 is a not perfect square.