556425901 has 2 divisors, whose sum is σ = 556425902. Its totient is φ = 556425900.

The previous prime is 556425889. The next prime is 556425907. The reversal of 556425901 is 109524655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419184676 + 137241225 = 20474^2 + 11715^2 .

It is a cyclic number.

It is not a de Polignac number, because 556425901 - 2¹¹ = 556423853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556425907) 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, 278212950 + 278212951.

It is an arithmetic number, because the mean of its divisors is an integer number (278212951).

Almost surely, 2^556425901 is an apocalyptic number.

It is an amenable number.

556425901 is a deficient number, since it is larger than the sum of its proper divisors (1).

556425901 is an equidigital number, since it uses as much as digits as its factorization.

556425901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 556425901 is about 23588.6816291204. The cubic root of 556425901 is about 822.4997587482.

The spelling of 556425901 in words is "five hundred fifty-six million, four hundred twenty-five thousand, nine hundred one".