557607409 has 2 divisors, whose sum is σ = 557607410. Its totient is φ = 557607408.

The previous prime is 557607373. The next prime is 557607439. The reversal of 557607409 is 904706755.

557607409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502432225 + 55175184 = 22415^2 + 7428^2 .

It is a cyclic number.

It is not a de Polignac number, because 557607409 - 2¹¹ = 557605361 is a prime.

It is not a weakly prime, because it can be changed into another prime (557607439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278803704 + 278803705.

It is an arithmetic number, because the mean of its divisors is an integer number (278803705).

Almost surely, 2^557607409 is an apocalyptic number.

It is an amenable number.

557607409 is a deficient number, since it is larger than the sum of its proper divisors (1).

557607409 is an equidigital number, since it uses as much as digits as its factorization.

557607409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 557607409 is about 23613.7123087413. The cubic root of 557607409 is about 823.0815091809.

The spelling of 557607409 in words is "five hundred fifty-seven million, six hundred seven thousand, four hundred nine".