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The sum of the nonprime divisors of 54 is a Mersenne prime exponent. [Noll]
The 54^{th} prime is the smallest number that is the sum of three cubes in two ways. [Noll] The sum of denoninators of the Bernoulli numbers less than or equal to 54 is prime. [Noll] 13^{54} + 54 is prime. [Noll] (54!/45!)1 is prime. [Patterson] 7^54+54^7 is the only nontitanic prime of form 7^n+n^7. [Loungrides]
(There are 3 curios for this number that have not yet been approved by an editor.)
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