557390557 has 4 divisors (see below), whose sum is σ = 558065376. Its totient is φ = 556715740.

The previous prime is 557390549. The next prime is 557390563. The reversal of 557390557 is 755093755.

557390557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 557390557 - 2³ = 557390549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557390657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336169 + ... + 337822.

It is an arithmetic number, because the mean of its divisors is an integer number (139516344).

Almost surely, 2^557390557 is an apocalyptic number.

It is an amenable number.

557390557 is a deficient number, since it is larger than the sum of its proper divisors (674819).

557390557 is an equidigital number, since it uses as much as digits as its factorization.

557390557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674818.

The product of its (nonzero) digits is 826875, while the sum is 46.

The square root of 557390557 is about 23609.1202080891. The cubic root of 557390557 is about 822.9747972953.

The spelling of 557390557 in words is "five hundred fifty-seven million, three hundred ninety thousand, five hundred fifty-seven".