5591309 has 2 divisors, whose sum is σ = 5591310. Its totient is φ = 5591308.

The previous prime is 5591297. The next prime is 5591359. The reversal of 5591309 is 9031955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5428900 + 162409 = 2330^2 + 403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5591309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5591359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795654 + 2795655.

It is an arithmetic number, because the mean of its divisors is an integer number (2795655).

Almost surely, 2^5591309 is an apocalyptic number.

It is an amenable number.

5591309 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591309 is an equidigital number, since it uses as much as digits as its factorization.

5591309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 5591309 is about 2364.5948913080. The cubic root of 5591309 is about 177.4888864297.

The spelling of 5591309 in words is "five million, five hundred ninety-one thousand, three hundred nine".