557489 has 2 divisors, whose sum is σ = 557490.
Its totient is φ = 557488.
The previous prime is 557483. The next prime is 557519. The reversal of 557489 is 984755.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 350464 + 207025 = 592^2 + 455^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-557489 is a prime.
It is a plaindrome in base 13.
It is not a weakly prime, because it can be changed into another prime (557483) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278744 + 278745.
It is an arithmetic number, because the mean of its divisors is an integer number (278745).
2557489 is an apocalyptic number.
It is an amenable number.
557489 is a deficient number, since it is larger than the sum of its proper divisors (1).
557489 is an equidigital number, since it uses as much as digits as its factorization.
557489 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 50400, while the sum is 38.
The square root of 557489 is about 746.6518599722.
The cubic root of 557489 is about 82.3023244079.
The spelling of 557489 in words is "five hundred fifty-seven thousand, four hundred eighty-nine".