556849 has 2 divisors, whose sum is σ = 556850. Its totient is φ = 556848.

The previous prime is 556841. The next prime is 556859. The reversal of 556849 is 948655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 21025 = 732^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 556849 - 2³ = 556841 is a prime.

556849 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (556841) 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 as a sum of consecutive naturals, namely, 278424 + 278425.

It is an arithmetic number, because the mean of its divisors is an integer number (278425).

2⁵⁵⁶⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

556849 is a deficient number, since it is larger than the sum of its proper divisors (1).

556849 is an equidigital number, since it uses as much as digits as its factorization.

556849 is an odious number, because the sum of its binary digits is odd.

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

The square root of 556849 is about 746.2231569712. The cubic root of 556849 is about 82.2708178628.

The spelling of 556849 in words is "five hundred fifty-six thousand, eight hundred forty-nine".