556215313 has 2 divisors, whose sum is σ = 556215314. Its totient is φ = 556215312.

The previous prime is 556215301. The next prime is 556215323. The reversal of 556215313 is 313512655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367757329 + 188457984 = 19177^2 + 13728^2 .

It is a cyclic number.

It is not a de Polignac number, because 556215313 - 2⁹ = 556214801 is a prime.

It is not a weakly prime, because it can be changed into another prime (556215323) 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, 278107656 + 278107657.

It is an arithmetic number, because the mean of its divisors is an integer number (278107657).

Almost surely, 2^556215313 is an apocalyptic number.

It is an amenable number.

556215313 is a deficient number, since it is larger than the sum of its proper divisors (1).

556215313 is an equidigital number, since it uses as much as digits as its factorization.

556215313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 31.

The square root of 556215313 is about 23584.2174557478. The cubic root of 556215313 is about 822.3959830644.

Adding to 556215313 its reverse (313512655), we get a palindrome (869727968).

The spelling of 556215313 in words is "five hundred fifty-six million, two hundred fifteen thousand, three hundred thirteen".