556425907 has 2 divisors, whose sum is σ = 556425908. Its totient is φ = 556425906.

The previous prime is 556425901. The next prime is 556425917. The reversal of 556425907 is 709524655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556425907 is a prime.

It is not a weakly prime, because it can be changed into another prime (556425901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278212953 + 278212954.

It is an arithmetic number, because the mean of its divisors is an integer number (278212954).

Almost surely, 2^556425907 is an apocalyptic number.

556425907 is a deficient number, since it is larger than the sum of its proper divisors (1).

556425907 is an equidigital number, since it uses as much as digits as its factorization.

556425907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 556425907 is about 23588.6817563000. The cubic root of 556425907 is about 822.4997617045.

The spelling of 556425907 in words is "five hundred fifty-six million, four hundred twenty-five thousand, nine hundred seven".