557485909 has 2 divisors, whose sum is σ = 557485910. Its totient is φ = 557485908.

The previous prime is 557485829. The next prime is 557485921. The reversal of 557485909 is 909584755.

557485909 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., 440370225 + 117115684 = 20985^2 + 10822^2 .

It is a cyclic number.

It is not a de Polignac number, because 557485909 - 2¹⁹ = 556961621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557485939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278742954 + 278742955.

It is an arithmetic number, because the mean of its divisors is an integer number (278742955).

Almost surely, 2^557485909 is an apocalyptic number.

It is an amenable number.

557485909 is a deficient number, since it is larger than the sum of its proper divisors (1).

557485909 is an equidigital number, since it uses as much as digits as its factorization.

557485909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The square root of 557485909 is about 23611.1395108326. The cubic root of 557485909 is about 823.0217229908.

The spelling of 557485909 in words is "five hundred fifty-seven million, four hundred eighty-five thousand, nine hundred nine".