556441 has 2 divisors, whose sum is σ = 556442. Its totient is φ = 556440.

The previous prime is 556403. The next prime is 556459. The reversal of 556441 is 144655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326041 + 230400 = 571^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 556441 - 2⁷ = 556313 is a prime.

556441 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (556741) 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, 278220 + 278221.

It is an arithmetic number, because the mean of its divisors is an integer number (278221).

2⁵⁵⁶⁴⁴¹ is an apocalyptic number.

It is an amenable number.

556441 is a deficient number, since it is larger than the sum of its proper divisors (1).

556441 is an equidigital number, since it uses as much as digits as its factorization.

556441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 556441 is about 745.9497302098. The cubic root of 556441 is about 82.2507198380.

The spelling of 556441 in words is "five hundred fifty-six thousand, four hundred forty-one".