556841 has 2 divisors, whose sum is σ = 556842. Its totient is φ = 556840.

The previous prime is 556823. The next prime is 556849. The reversal of 556841 is 148655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 87616 = 685^2 + 296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556841 is a prime.

It is a Chen prime.

It is equal to p₄₅₈₃₉ and since 556841 and 45839 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (556849) 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, 278420 + 278421.

It is an arithmetic number, because the mean of its divisors is an integer number (278421).

2⁵⁵⁶⁸⁴¹ is an apocalyptic number.

It is an amenable number.

556841 is a deficient number, since it is larger than the sum of its proper divisors (1).

556841 is an equidigital number, since it uses as much as digits as its factorization.

556841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 556841 is about 746.2177966251. The cubic root of 556841 is about 82.2704238782.

The spelling of 556841 in words is "five hundred fifty-six thousand, eight hundred forty-one".