557985 has 8 divisors (see below), whose sum is σ = 892800.
Its totient is φ = 297584.
The previous prime is 557981. The next prime is 557987. The reversal of 557985 is 589755.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 557985 - 22 = 557981 is a prime.
It is a super-2 number, since 2×5579852 = 622694520450, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (557981) 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 in 7 ways as a sum of consecutive naturals, for example, 18585 + ... + 18614.
It is an arithmetic number, because the mean of its divisors is an integer number (111600).
2557985 is an apocalyptic number.
It is an amenable number.
557985 is a deficient number, since it is larger than the sum of its proper divisors (334815).
557985 is a wasteful number, since it uses less digits than its factorization.
557985 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 37207.
The product of its digits is 63000, while the sum is 39.
The square root of 557985 is about 746.9839355702.
The cubic root of 557985 is about 82.3267253990.
The spelling of 557985 in words is "five hundred fifty-seven thousand, nine hundred eighty-five".