55117 has 2 divisors, whose sum is σ = 55118. Its totient is φ = 55116.
The previous prime is 55109. The next prime is 55127. The reversal of 55117 is 71155.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 54756 + 361 = 234^2 + 19^2 .
It is a cyclic number.
It is not a de Polignac number, because 55117 - 23 = 55109 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 55094 and 55103.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (55127) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27558 + 27559.
It is an arithmetic number, because the mean of its divisors is an integer number (27559).
255117 is an apocalyptic number.
It is an amenable number.
55117 is a deficient number, since it is larger than the sum of its proper divisors (1).
55117 is an equidigital number, since it uses as much as digits as its factorization.
55117 is an evil number, because the sum of its binary digits is even.
The product of its digits is 175, while the sum is 19.
The square root of 55117 is about 234.7701003109. The cubic root of 55117 is about 38.0564718987.
The spelling of 55117 in words is "fifty-five thousand, one hundred seventeen".
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