556830361 has 2 divisors, whose sum is σ = 556830362. Its totient is φ = 556830360.

The previous prime is 556830311. The next prime is 556830413. The reversal of 556830361 is 163038655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549621136 + 7209225 = 23444^2 + 2685^2 .

It is a cyclic number.

It is not a de Polignac number, because 556830361 - 2²¹ = 554733209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556830361.

It is not a weakly prime, because it can be changed into another prime (556830311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278415180 + 278415181.

It is an arithmetic number, because the mean of its divisors is an integer number (278415181).

Almost surely, 2^556830361 is an apocalyptic number.

It is an amenable number.

556830361 is a deficient number, since it is larger than the sum of its proper divisors (1).

556830361 is an equidigital number, since it uses as much as digits as its factorization.

556830361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 556830361 is about 23597.2532511731. The cubic root of 556830361 is about 822.6989992221.

The spelling of 556830361 in words is "five hundred fifty-six million, eight hundred thirty thousand, three hundred sixty-one".