5287691 has 2 divisors, whose sum is σ = 5287692. Its totient is φ = 5287690.

The previous prime is 5287687. The next prime is 5287693. The reversal of 5287691 is 1967825.

5287691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5287691 - 2² = 5287687 is a prime.

It is a super-2 number, since 2×5287691² = 55919352222962, which contains 22 as substring.

Together with 5287693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5287693) 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 as a sum of consecutive naturals, namely, 2643845 + 2643846.

It is an arithmetic number, because the mean of its divisors is an integer number (2643846).

Almost surely, 2^5287691 is an apocalyptic number.

5287691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5287691 is an equidigital number, since it uses as much as digits as its factorization.

5287691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 5287691 is about 2299.4979886923. The cubic root of 5287691 is about 174.2162612466.

The spelling of 5287691 in words is "five million, two hundred eighty-seven thousand, six hundred ninety-one".