556043231 has 2 divisors, whose sum is σ = 556043232. Its totient is φ = 556043230.

The previous prime is 556043209. The next prime is 556043287. The reversal of 556043231 is 132340655.

556043231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556043231 - 2¹⁸ = 555781087 is a prime.

It is a super-2 number, since 2×556043231² = 618368149481838722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 556043194 and 556043203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556043291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278021615 + 278021616.

It is an arithmetic number, because the mean of its divisors is an integer number (278021616).

Almost surely, 2^556043231 is an apocalyptic number.

556043231 is a deficient number, since it is larger than the sum of its proper divisors (1).

556043231 is an equidigital number, since it uses as much as digits as its factorization.

556043231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 556043231 is about 23580.5689286752. The cubic root of 556043231 is about 822.3111633078.

Adding to 556043231 its reverse (132340655), we get a palindrome (688383886).

The spelling of 556043231 in words is "five hundred fifty-six million, forty-three thousand, two hundred thirty-one".