5281391 has 4 divisors (see below), whose sum is σ = 5333784. Its totient is φ = 5229000.

The previous prime is 5281379. The next prime is 5281403. The reversal of 5281391 is 1931825.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5281379) and next prime (5281403).

It is a cyclic number.

It is not a de Polignac number, because 5281391 - 2¹⁰ = 5280367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26045 + ... + 26246.

It is an arithmetic number, because the mean of its divisors is an integer number (1333446).

Almost surely, 2^5281391 is an apocalyptic number.

5281391 is a deficient number, since it is larger than the sum of its proper divisors (52393).

5281391 is a wasteful number, since it uses less digits than its factorization.

5281391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52392.

The product of its digits is 2160, while the sum is 29.

The square root of 5281391 is about 2298.1277162073. The cubic root of 5281391 is about 174.1470439751.

The spelling of 5281391 in words is "five million, two hundred eighty-one thousand, three hundred ninety-one".