5557309 has 2 divisors, whose sum is σ = 5557310. Its totient is φ = 5557308.

The previous prime is 5557297. The next prime is 5557313. The reversal of 5557309 is 9037555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3694084 + 1863225 = 1922^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 5557309 - 2¹⁷ = 5426237 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5557369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778654 + 2778655.

It is an arithmetic number, because the mean of its divisors is an integer number (2778655).

Almost surely, 2^5557309 is an apocalyptic number.

It is an amenable number.

5557309 is a deficient number, since it is larger than the sum of its proper divisors (1).

5557309 is an equidigital number, since it uses as much as digits as its factorization.

5557309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 5557309 is about 2357.3945363473. The cubic root of 5557309 is about 177.1283926981.

The spelling of 5557309 in words is "five million, five hundred fifty-seven thousand, three hundred nine".