556322009 has 2 divisors, whose sum is σ = 556322010. Its totient is φ = 556322008.

The previous prime is 556321981. The next prime is 556322017. The reversal of 556322009 is 900223655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510624409 + 45697600 = 22597^2 + 6760^2 .

It is a cyclic number.

It is not a de Polignac number, because 556322009 - 2¹² = 556317913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556322309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278161004 + 278161005.

It is an arithmetic number, because the mean of its divisors is an integer number (278161005).

Almost surely, 2^556322009 is an apocalyptic number.

It is an amenable number.

556322009 is a deficient number, since it is larger than the sum of its proper divisors (1).

556322009 is an equidigital number, since it uses as much as digits as its factorization.

556322009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 556322009 is about 23586.4793684857. The cubic root of 556322009 is about 822.4485650710.

It can be divided in two parts, 5563 and 22009, that added together give a palindrome (27572).

The spelling of 556322009 in words is "five hundred fifty-six million, three hundred twenty-two thousand, nine".