5306391 has 28 divisors (see below), whose sum is σ = 8263080. Its totient is φ = 3402000.

The previous prime is 5306387. The next prime is 5306393. The reversal of 5306391 is 1936035.

It is not a de Polignac number, because 5306391 - 2² = 5306387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5306393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 21016 + ... + 21266.

It is an arithmetic number, because the mean of its divisors is an integer number (295110).

Almost surely, 2^5306391 is an apocalyptic number.

5306391 is a deficient number, since it is larger than the sum of its proper divisors (2956689).

5306391 is an equidigital number, since it uses as much as digits as its factorization.

5306391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 5306391 is about 2303.5605049575. The cubic root of 5306391 is about 174.4213924429.

The spelling of 5306391 in words is "five million, three hundred six thousand, three hundred ninety-one".