557221643 has 8 divisors (see below), whose sum is σ = 610403376. Its totient is φ = 504460800.

The previous prime is 557221601. The next prime is 557221663. The reversal of 557221643 is 346122755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 557221643 - 2¹⁶ = 557156107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (557221663) 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 in 7 ways as a sum of consecutive naturals, for example, 102446 + ... + 107747.

It is an arithmetic number, because the mean of its divisors is an integer number (76300422).

Almost surely, 2^557221643 is an apocalyptic number.

557221643 is a deficient number, since it is larger than the sum of its proper divisors (53181733).

557221643 is a wasteful number, since it uses less digits than its factorization.

557221643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210445.

The product of its digits is 50400, while the sum is 35.

The square root of 557221643 is about 23605.5426330343. The cubic root of 557221643 is about 822.8916563045.

The spelling of 557221643 in words is "five hundred fifty-seven million, two hundred twenty-one thousand, six hundred forty-three".