557243 has 4 divisors (see below), whose sum is σ = 590040. Its totient is φ = 524448.

The previous prime is 557201. The next prime is 557261. The reversal of 557243 is 342755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 557243 - 2⁸ = 556987 is a prime.

It is a super-2 number, since 2×557243² = 621039522098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557273) 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, 16373 + ... + 16406.

It is an arithmetic number, because the mean of its divisors is an integer number (147510).

2⁵⁵⁷²⁴³ is an apocalyptic number.

557243 is a deficient number, since it is larger than the sum of its proper divisors (32797).

557243 is a wasteful number, since it uses less digits than its factorization.

557243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32796.

The product of its digits is 4200, while the sum is 26.

The square root of 557243 is about 746.4871063856. The cubic root of 557243 is about 82.2902169340.

Adding to 557243 its reverse (342755), we get a palindrome (899998).

The spelling of 557243 in words is "five hundred fifty-seven thousand, two hundred forty-three".