556008641 has 2 divisors, whose sum is σ = 556008642. Its totient is φ = 556008640.

The previous prime is 556008623. The next prime is 556008643. The reversal of 556008641 is 146800655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427662400 + 128346241 = 20680^2 + 11329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556008641 is a prime.

Together with 556008643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556008643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278004320 + 278004321.

It is an arithmetic number, because the mean of its divisors is an integer number (278004321).

Almost surely, 2^556008641 is an apocalyptic number.

It is an amenable number.

556008641 is a deficient number, since it is larger than the sum of its proper divisors (1).

556008641 is an equidigital number, since it uses as much as digits as its factorization.

556008641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 556008641 is about 23579.8354744048. The cubic root of 556008641 is about 822.2941116762.

The spelling of 556008641 in words is "five hundred fifty-six million, eight thousand, six hundred forty-one".