556489 has 4 divisors (see below), whose sum is σ = 562324. Its totient is φ = 550656.

The previous prime is 556487. The next prime is 556513. The reversal of 556489 is 984655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90000 + 466489 = 300^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 556489 - 2¹ = 556487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (140581).

2⁵⁵⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

556489 is a deficient number, since it is larger than the sum of its proper divisors (5835).

556489 is an equidigital number, since it uses as much as digits as its factorization.

556489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834.

The product of its digits is 43200, while the sum is 37.

The square root of 556489 is about 745.9819032658. The cubic root of 556489 is about 82.2530848213.

The spelling of 556489 in words is "five hundred fifty-six thousand, four hundred eighty-nine".