5391 has 6 divisors (see below), whose sum is σ = 7800. Its totient is φ = 3588.

The previous prime is 5387. The next prime is 5393. The reversal of 5391 is 1935.

It is not a de Polignac number, because 5391 - 2² = 5387 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291 + ... + 308.

It is an arithmetic number, because the mean of its divisors is an integer number (1300).

2⁵³⁹¹ is an apocalyptic number.

5391 is a deficient number, since it is larger than the sum of its proper divisors (2409).

5391 is a wasteful number, since it uses less digits than its factorization.

5391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 602 counting only the distinct ones).

The product of its digits is 135, while the sum is 18.

The square root of 5391 is about 73.4234295031. The cubic root of 5391 is about 17.5343542836.

It can be divided in two parts, 53 and 91, that added together give a square (144 = 12²).

The spelling of 5391 in words is "five thousand, three hundred ninety-one".