557780 has 18 divisors (see below), whose sum is σ = 1178394. Its totient is φ = 221776.

The previous prime is 557779. The next prime is 557789. The reversal of 557780 is 87755.

It can be written as a sum of positive squares in only one way, i.e., 446224 + 111556 = 668^2 + 334^2 .

It is a super-2 number, since 2×557780² = 622237056800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557789) 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 5 ways as a sum of consecutive naturals, for example, 3257 + ... + 3423.

2⁵⁵⁷⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

557780 is an abundant number, since it is smaller than the sum of its proper divisors (620614).

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

557780 is a wasteful number, since it uses less digits than its factorization.

557780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 557780 is about 746.8467044849. The cubic root of 557780 is about 82.3166420658.

The spelling of 557780 in words is "five hundred fifty-seven thousand, seven hundred eighty".