115771 has 2 divisors, whose sum is σ = 115772. Its totient is φ = 115770.
The previous prime is 115769. The next prime is 115777. The reversal of 115771 is 177511.
It is a weak prime.
It is an emirp because it is prime and its reverse (177511) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 115771 - 21 = 115769 is a prime.
Together with 115769, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (115777) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57885 + 57886.
It is an arithmetic number, because the mean of its divisors is an integer number (57886).
2115771 is an apocalyptic number.
115771 is a deficient number, since it is larger than the sum of its proper divisors (1).
115771 is an equidigital number, since it uses as much as digits as its factorization.
115771 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 245, while the sum is 22.
The square root of 115771 is about 340.2513776607. The cubic root of 115771 is about 48.7378755735.
The spelling of 115771 in words is "one hundred fifteen thousand, seven hundred seventy-one".
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