5381 has 2 divisors, whose sum is σ = 5382.
Its totient is φ = 5380.
The previous prime is 5351. The next prime is 5387. The reversal of 5381 is 1835.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 4225 + 1156 = 65^2 + 34^2
It is a cyclic number.
It is not a de Polignac number, because 5381 - 210 = 4357 is a prime.
It is a super-2 number, since 2×53812 = 57910322, which contains 22 as substring.
It is a Chen prime.
It is a plaindrome in base 13.
It is a zygodrome in base 4.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (5387) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2690 + 2691.
It is an arithmetic number, because the mean of its divisors is an integer number (2691).
It is an amenable number.
5381 is a deficient number, since it is larger than the sum of its proper divisors (1).
5381 is an equidigital number, since it uses as much as digits as its factorization.
5381 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 120, while the sum is 17.
The square root of 5381 is about 73.3552997404.
The cubic root of 5381 is about 17.5235058280.
The spelling of 5381 in words is "five thousand, three hundred eighty-one".