556405323 has 4 divisors (see below), whose sum is σ = 741873768. Its totient is φ = 370936880.

The previous prime is 556405321. The next prime is 556405327. The reversal of 556405323 is 323504655.

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

It is a cyclic number.

It is not a de Polignac number, because 556405323 - 2¹ = 556405321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (556405321) 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 in 3 ways as a sum of consecutive naturals, for example, 92734218 + ... + 92734223.

It is an arithmetic number, because the mean of its divisors is an integer number (185468442).

Almost surely, 2^556405323 is an apocalyptic number.

556405323 is a deficient number, since it is larger than the sum of its proper divisors (185468445).

556405323 is a wasteful number, since it uses less digits than its factorization.

556405323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185468444.

The product of its (nonzero) digits is 54000, while the sum is 33.

The square root of 556405323 is about 23588.2454413210. The cubic root of 556405323 is about 822.4896192677.

Adding to 556405323 its reverse (323504655), we get a palindrome (879909978).

The spelling of 556405323 in words is "five hundred fifty-six million, four hundred five thousand, three hundred twenty-three".