557128636 has 24 divisors (see below), whose sum is σ = 981517824. Its totient is φ = 276702000.

The previous prime is 557128631. The next prime is 557128643. The reversal of 557128636 is 636821755.

557128636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 557128592 and 557128601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557128631) 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, 645141 + ... + 646003.

It is an arithmetic number, because the mean of its divisors is an integer number (40896576).

Almost surely, 2^557128636 is an apocalyptic number.

It is an amenable number.

557128636 is a deficient number, since it is larger than the sum of its proper divisors (424389188).

557128636 is a wasteful number, since it uses less digits than its factorization.

557128636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1759 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 557128636 is about 23603.5725262088. The cubic root of 557128636 is about 822.8458702492.

The spelling of 557128636 in words is "five hundred fifty-seven million, one hundred twenty-eight thousand, six hundred thirty-six".