557020 has 12 divisors (see below), whose sum is σ = 1169784. Its totient is φ = 222800.

The previous prime is 557017. The next prime is 557021. The reversal of 557020 is 20755.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13906 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (97482).

2⁵⁵⁷⁰²⁰ is an apocalyptic number.

It is an amenable number.

557020 is an abundant number, since it is smaller than the sum of its proper divisors (612764).

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

557020 is a wasteful number, since it uses less digits than its factorization.

557020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27860 (or 27858 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 557020 is about 746.3377251620. The cubic root of 557020 is about 82.2792383802.

Adding to 557020 its reverse (20755), we get a palindrome (577775).

The spelling of 557020 in words is "five hundred fifty-seven thousand, twenty".