556010321 has 2 divisors, whose sum is σ = 556010322. Its totient is φ = 556010320.

The previous prime is 556010309. The next prime is 556010341. The reversal of 556010321 is 123010655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555262096 + 748225 = 23564^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 556010321 - 2¹⁴ = 555993937 is a prime.

It is not a weakly prime, because it can be changed into another prime (556010341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278005160 + 278005161.

It is an arithmetic number, because the mean of its divisors is an integer number (278005161).

Almost surely, 2^556010321 is an apocalyptic number.

It is an amenable number.

556010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

556010321 is an equidigital number, since it uses as much as digits as its factorization.

556010321 is an evil number, because the sum of its binary digits is even.

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

The square root of 556010321 is about 23579.8710980361. The cubic root of 556010321 is about 822.2949398724.

Adding to 556010321 its reverse (123010655), we get a palindrome (679020976).

The spelling of 556010321 in words is "five hundred fifty-six million, ten thousand, three hundred twenty-one".