557213 has 4 divisors (see below), whose sum is σ = 586560. Its totient is φ = 527868.

The previous prime is 557201. The next prime is 557261. The reversal of 557213 is 312755.

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 557213 - 2⁴ = 557197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14645 + ... + 14682.

It is an arithmetic number, because the mean of its divisors is an integer number (146640).

2⁵⁵⁷²¹³ is an apocalyptic number.

It is an amenable number.

557213 is a deficient number, since it is larger than the sum of its proper divisors (29347).

557213 is a wasteful number, since it uses less digits than its factorization.

557213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29346.

The product of its digits is 1050, while the sum is 23.

The square root of 557213 is about 746.4670119972. The cubic root of 557213 is about 82.2887401690.

Adding to 557213 its reverse (312755), we get a palindrome (869968).

The spelling of 557213 in words is "five hundred fifty-seven thousand, two hundred thirteen".