541

This number is a prime.

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+ 541 = prime((5*4*1)*(5+4+1) - π(541)). Note that 541 is the second number with this property. [Firoozbakht]

+ reversal(541) = 5! + 4! + 1. The prime 541 is the only odd number greater than one with this property. [Firoozbakht]

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