556557323 has 4 divisors (see below), whose sum is σ = 636065520. Its totient is φ = 477049128.

The previous prime is 556557319. The next prime is 556557343. The reversal of 556557323 is 323755655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323755655 = 5 ⋅64751131.

It is a cyclic number.

It is not a de Polignac number, because 556557323 - 2² = 556557319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556557343) 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, 39754088 + ... + 39754101.

It is an arithmetic number, because the mean of its divisors is an integer number (159016380).

Almost surely, 2^556557323 is an apocalyptic number.

556557323 is a deficient number, since it is larger than the sum of its proper divisors (79508197).

556557323 is an equidigital number, since it uses as much as digits as its factorization.

556557323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79508196.

The product of its digits is 472500, while the sum is 41.

The square root of 556557323 is about 23591.4671650578. The cubic root of 556557323 is about 822.5645089416.

The spelling of 556557323 in words is "five hundred fifty-six million, five hundred fifty-seven thousand, three hundred twenty-three".