557288420 has 24 divisors (see below), whose sum is σ = 1260329784. Its totient is φ = 205767936.

The previous prime is 557288419. The next prime is 557288429. The reversal of 557288420 is 24882755.

557288420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 133587364 + 423701056 = 11558^2 + 20584^2 .

It is not an unprimeable number, because it can be changed into a prime (557288429) 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, 1071449 + ... + 1071968.

It is an arithmetic number, because the mean of its divisors is an integer number (52513741).

Almost surely, 2^557288420 is an apocalyptic number.

It is an amenable number.

557288420 is an abundant number, since it is smaller than the sum of its proper divisors (703041364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557288420 is a wasteful number, since it uses less digits than its factorization.

557288420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143439 (or 2143437 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 557288420 is about 23606.9570254194. The cubic root of 557288420 is about 822.9245265528.

The spelling of 557288420 in words is "five hundred fifty-seven million, two hundred eighty-eight thousand, four hundred twenty".