557249187 has 8 divisors (see below), whose sum is σ = 810544320. Its totient is φ = 337726760.

The previous prime is 557249183. The next prime is 557249197. The reversal of 557249187 is 781942755.

557249187 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 not a de Polignac number, because 557249187 - 2² = 557249183 is a prime.

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, 8443137 + ... + 8443202.

It is an arithmetic number, because the mean of its divisors is an integer number (101318040).

Almost surely, 2^557249187 is an apocalyptic number.

557249187 is a deficient number, since it is larger than the sum of its proper divisors (253295133).

557249187 is a wasteful number, since it uses less digits than its factorization.

557249187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16886353.

The product of its digits is 705600, while the sum is 48.

The square root of 557249187 is about 23606.1260481257. The cubic root of 557249187 is about 822.9052148556.

The spelling of 557249187 in words is "five hundred fifty-seven million, two hundred forty-nine thousand, one hundred eighty-seven".