556601550997 has 2 divisors, whose sum is σ = 556601550998. Its totient is φ = 556601550996.

The previous prime is 556601550991. The next prime is 556601551153. The reversal of 556601550997 is 799055106655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420181389796 + 136420161201 = 648214^2 + 369351^2 .

It is a cyclic number.

It is not a de Polignac number, because 556601550997 - 2¹¹ = 556601548949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556601550991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278300775498 + 278300775499.

It is an arithmetic number, because the mean of its divisors is an integer number (278300775499).

Almost surely, 2^556601550997 is an apocalyptic number.

It is an amenable number.

556601550997 is a deficient number, since it is larger than the sum of its proper divisors (1).

556601550997 is an equidigital number, since it uses as much as digits as its factorization.

556601550997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12757500, while the sum is 58.

The spelling of 556601550997 in words is "five hundred fifty-six billion, six hundred one million, five hundred fifty thousand, nine hundred ninety-seven".