557249189 has 8 divisors (see below), whose sum is σ = 643422528. Its totient is φ = 472717440.

The previous prime is 557249183. The next prime is 557249197. The reversal of 557249189 is 981942755.

557249189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557249189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557249183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409667 + ... + 411024.

It is an arithmetic number, because the mean of its divisors is an integer number (80427816).

Almost surely, 2^557249189 is an apocalyptic number.

It is an amenable number.

557249189 is a deficient number, since it is larger than the sum of its proper divisors (86173339).

557249189 is an equidigital number, since it uses as much as digits as its factorization.

557249189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820795.

The product of its digits is 907200, while the sum is 50.

The square root of 557249189 is about 23606.1260904876. The cubic root of 557249189 is about 822.9052158401.

The spelling of 557249189 in words is "five hundred fifty-seven million, two hundred forty-nine thousand, one hundred eighty-nine".