556811011 has 2 divisors, whose sum is σ = 556811012. Its totient is φ = 556811010.

The previous prime is 556810997. The next prime is 556811027. The reversal of 556811011 is 110118655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556811011 - 2⁷ = 556810883 is a prime.

It is not a weakly prime, because it can be changed into another prime (556815011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278405505 + 278405506.

It is an arithmetic number, because the mean of its divisors is an integer number (278405506).

Almost surely, 2^556811011 is an apocalyptic number.

556811011 is a deficient number, since it is larger than the sum of its proper divisors (1).

556811011 is an equidigital number, since it uses as much as digits as its factorization.

556811011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 556811011 is about 23596.8432422644. The cubic root of 556811011 is about 822.6894694435.

Adding to 556811011 its reverse (110118655), we get a palindrome (666929666).

The spelling of 556811011 in words is "five hundred fifty-six million, eight hundred eleven thousand, eleven".