557285438 has 4 divisors (see below), whose sum is σ = 835928160. Its totient is φ = 278642718.

The previous prime is 557285437. The next prime is 557285459. The reversal of 557285438 is 834582755.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 557285392 and 557285401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557285437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139321358 + ... + 139321361.

It is an arithmetic number, because the mean of its divisors is an integer number (208982040).

Almost surely, 2^557285438 is an apocalyptic number.

557285438 is a deficient number, since it is larger than the sum of its proper divisors (278642722).

557285438 is a wasteful number, since it uses less digits than its factorization.

557285438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278642721.

The product of its digits is 1344000, while the sum is 47.

The square root of 557285438 is about 23606.8938659875. The cubic root of 557285438 is about 822.9230587519.

The spelling of 557285438 in words is "five hundred fifty-seven million, two hundred eighty-five thousand, four hundred thirty-eight".