557241321 has 16 divisors (see below), whose sum is σ = 914447744. Its totient is φ = 293929344.

The previous prime is 557241313. The next prime is 557241323. The reversal of 557241321 is 123142755.

It is not a de Polignac number, because 557241321 - 2³ = 557241313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (557241323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020316 + ... + 1020861.

It is an arithmetic number, because the mean of its divisors is an integer number (57152984).

Almost surely, 2^557241321 is an apocalyptic number.

It is an amenable number.

557241321 is a deficient number, since it is larger than the sum of its proper divisors (357206423).

557241321 is a wasteful number, since it uses less digits than its factorization.

557241321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041200.

The product of its digits is 8400, while the sum is 30.

The square root of 557241321 is about 23605.9594382436. The cubic root of 557241321 is about 822.9013428578.

The spelling of 557241321 in words is "five hundred fifty-seven million, two hundred forty-one thousand, three hundred twenty-one".