556533977 has 2 divisors, whose sum is σ = 556533978. Its totient is φ = 556533976.

The previous prime is 556533931. The next prime is 556534031. The reversal of 556533977 is 779335655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520341721 + 36192256 = 22811^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 556533977 - 2²⁴ = 539756761 is a prime.

It is not a weakly prime, because it can be changed into another prime (556538977) 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, 278266988 + 278266989.

It is an arithmetic number, because the mean of its divisors is an integer number (278266989).

Almost surely, 2^556533977 is an apocalyptic number.

It is an amenable number.

556533977 is a deficient number, since it is larger than the sum of its proper divisors (1).

556533977 is an equidigital number, since it uses as much as digits as its factorization.

556533977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2976750, while the sum is 50.

The square root of 556533977 is about 23590.9723623254. The cubic root of 556533977 is about 822.5530073653.

The spelling of 556533977 in words is "five hundred fifty-six million, five hundred thirty-three thousand, nine hundred seventy-seven".