557540 has 24 divisors (see below), whose sum is σ = 1192632. Its totient is φ = 218880.

The previous prime is 557537. The next prime is 557551. The reversal of 557540 is 45755.

It can be written as a sum of positive squares in 4 ways, for example, as 27556 + 529984 = 166^2 + 728^2 .

It is an unprimeable 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, 992 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (49693).

2⁵⁵⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

557540 is an abundant number, since it is smaller than the sum of its proper divisors (635092).

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

557540 is a wasteful number, since it uses less digits than its factorization.

557540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 557540 is about 746.6860116542. The cubic root of 557540 is about 82.3048340482.

The spelling of 557540 in words is "five hundred fifty-seven thousand, five hundred forty".