555319997 has 2 divisors, whose sum is σ = 555319998. Its totient is φ = 555319996.

The previous prime is 555319987. The next prime is 555320009. The reversal of 555319997 is 799913555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409900516 + 145419481 = 20246^2 + 12059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555319997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555319937) 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, 277659998 + 277659999.

It is an arithmetic number, because the mean of its divisors is an integer number (277659999).

Almost surely, 2^555319997 is an apocalyptic number.

It is an amenable number.

555319997 is a deficient number, since it is larger than the sum of its proper divisors (1).

555319997 is an equidigital number, since it uses as much as digits as its factorization.

555319997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1913625, while the sum is 53.

The square root of 555319997 is about 23565.2285581957. The cubic root of 555319997 is about 821.9544875475.

The spelling of 555319997 in words is "five hundred fifty-five million, three hundred nineteen thousand, nine hundred ninety-seven".