5647591 has 2 divisors, whose sum is σ = 5647592. Its totient is φ = 5647590.

The previous prime is 5647589. The next prime is 5647601. The reversal of 5647591 is 1957465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5647591 - 2¹ = 5647589 is a prime.

Together with 5647589, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5647591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5647501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823795 + 2823796.

It is an arithmetic number, because the mean of its divisors is an integer number (2823796).

Almost surely, 2^5647591 is an apocalyptic number.

5647591 is a deficient number, since it is larger than the sum of its proper divisors (1).

5647591 is an equidigital number, since it uses as much as digits as its factorization.

5647591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 5647591 is about 2376.4660738163. The cubic root of 5647591 is about 178.0824324670.

The spelling of 5647591 in words is "five million, six hundred forty-seven thousand, five hundred ninety-one".