557238 has 16 divisors (see below), whose sum is σ = 1215936. Its totient is φ = 168840.

The previous prime is 557201. The next prime is 557261. The reversal of 557238 is 832755.

It is a happy number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5 + 5³ + 2¹⁹ + 7² + 3 + 8⁵ .

It is a congruent number.

It is an unprimeable number.

557238 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 4156 + ... + 4287.

It is an arithmetic number, because the mean of its divisors is an integer number (75996).

2⁵⁵⁷²³⁸ is an apocalyptic number.

557238 is an abundant number, since it is smaller than the sum of its proper divisors (658698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557238 is a wasteful number, since it uses less digits than its factorization.

557238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8459.

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

The square root of 557238 is about 746.4837573585. The cubic root of 557238 is about 82.2899708102.

The spelling of 557238 in words is "five hundred fifty-seven thousand, two hundred thirty-eight".