557246938 has 4 divisors (see below), whose sum is σ = 835870410. Its totient is φ = 278623468.

The previous prime is 557246909. The next prime is 557246939. The reversal of 557246938 is 839642755.

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

It can be written as a sum of positive squares in only one way, i.e., 474673369 + 82573569 = 21787^2 + 9087^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 557246891 and 557246900.

It is not an unprimeable number, because it can be changed into a prime (557246939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139311733 + ... + 139311736.

Almost surely, 2^557246938 is an apocalyptic number.

557246938 is a deficient number, since it is larger than the sum of its proper divisors (278623472).

557246938 is a wasteful number, since it uses less digits than its factorization.

557246938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278623471.

The product of its digits is 1814400, while the sum is 49.

The square root of 557246938 is about 23606.0784121378. The cubic root of 557246938 is about 822.9041078007.

It can be divided in two parts, 55724693 and 8, that multiplied together give a palindrome (445797544).

The spelling of 557246938 in words is "five hundred fifty-seven million, two hundred forty-six thousand, nine hundred thirty-eight".