5081391 has 12 divisors (see below), whose sum is σ = 8388432. Its totient is φ = 2903616.

The previous prime is 5081387. The next prime is 5081393. The reversal of 5081391 is 1931805.

5081391 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5081391 - 2² = 5081387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5081393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40266 + ... + 40391.

It is an arithmetic number, because the mean of its divisors is an integer number (699036).

Almost surely, 2^5081391 is an apocalyptic number.

5081391 is a deficient number, since it is larger than the sum of its proper divisors (3307041).

5081391 is a wasteful number, since it uses less digits than its factorization.

5081391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80670 (or 80667 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 5081391 is about 2254.1940910223. The cubic root of 5081391 is about 171.9204495122.

The spelling of 5081391 in words is "five million, eighty-one thousand, three hundred ninety-one".