556549 has 8 divisors (see below), whose sum is σ = 651200. Its totient is φ = 465948.

The previous prime is 556537. The next prime is 556559. The reversal of 556549 is 945655.

It is a happy number.

It is not a de Polignac number, because 556549 - 2⁹ = 556037 is a prime.

It is a Duffinian number.

Its product of digits (27000) is a multiple of the sum of its prime divisors (50).

556549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12922 + ... + 12964.

It is an arithmetic number, because the mean of its divisors is an integer number (81400).

2⁵⁵⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

556549 is a deficient number, since it is larger than the sum of its proper divisors (94651).

556549 is an frugal number, since it uses more digits than its factorization.

556549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 50 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 556549 is about 746.0221176346. The cubic root of 556549 is about 82.2560408592.

The spelling of 556549 in words is "five hundred fifty-six thousand, five hundred forty-nine".