556140223 has 2 divisors, whose sum is σ = 556140224. Its totient is φ = 556140222.

The previous prime is 556140197. The next prime is 556140257. The reversal of 556140223 is 322041655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556140223 - 2²¹ = 554043071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556140191 and 556140200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556140323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278070111 + 278070112.

It is an arithmetic number, because the mean of its divisors is an integer number (278070112).

Almost surely, 2^556140223 is an apocalyptic number.

556140223 is a deficient number, since it is larger than the sum of its proper divisors (1).

556140223 is an equidigital number, since it uses as much as digits as its factorization.

556140223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 556140223 is about 23582.6254475620. The cubic root of 556140223 is about 822.3589731200.

Adding to 556140223 its reverse (322041655), we get a palindrome (878181878).

The spelling of 556140223 in words is "five hundred fifty-six million, one hundred forty thousand, two hundred twenty-three".