556830409 has 4 divisors (see below), whose sum is σ = 556950916. Its totient is φ = 556709904.

The previous prime is 556830361. The next prime is 556830413. The reversal of 556830409 is 904038655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143928009 + 412902400 = 11997^2 + 20320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556830409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556830499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53034 + ... + 62659.

It is an arithmetic number, because the mean of its divisors is an integer number (139237729).

Almost surely, 2^556830409 is an apocalyptic number.

It is an amenable number.

556830409 is a deficient number, since it is larger than the sum of its proper divisors (120507).

556830409 is a wasteful number, since it uses less digits than its factorization.

556830409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120506.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 556830409 is about 23597.2542682406. The cubic root of 556830409 is about 822.6990228616.

The spelling of 556830409 in words is "five hundred fifty-six million, eight hundred thirty thousand, four hundred nine".