557251643 has 12 divisors (see below), whose sum is σ = 609407568. Its totient is φ = 509277600.

The previous prime is 557251601. The next prime is 557251657. The reversal of 557251643 is 346152755.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-557251643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557251597 and 557251606.

It is not an unprimeable number, because it can be changed into a prime (557251243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746 + ... + 33392.

It is an arithmetic number, because the mean of its divisors is an integer number (50783964).

Almost surely, 2^557251643 is an apocalyptic number.

557251643 is a deficient number, since it is larger than the sum of its proper divisors (52155925).

557251643 is a wasteful number, since it uses less digits than its factorization.

557251643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32774 (or 32761 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 557251643 is about 23606.1780684633. The cubic root of 557251643 is about 822.9064238014.

The spelling of 557251643 in words is "five hundred fifty-seven million, two hundred fifty-one thousand, six hundred forty-three".