556601 has 2 divisors, whose sum is σ = 556602. Its totient is φ = 556600.

The previous prime is 556583. The next prime is 556607. The reversal of 556601 is 106655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525625 + 30976 = 725^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 556601 - 2⁶ = 556537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556607) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278300 + 278301.

It is an arithmetic number, because the mean of its divisors is an integer number (278301).

2⁵⁵⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

556601 is a deficient number, since it is larger than the sum of its proper divisors (1).

556601 is an equidigital number, since it uses as much as digits as its factorization.

556601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 556601 is about 746.0569683342. The cubic root of 556601 is about 82.2586025869.

The spelling of 556601 in words is "five hundred fifty-six thousand, six hundred one".