555971797 has 2 divisors, whose sum is σ = 555971798. Its totient is φ = 555971796.

The previous prime is 555971753. The next prime is 555971803. The reversal of 555971797 is 797179555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 446434641 + 109537156 = 21129^2 + 10466^2 .

It is a cyclic number.

It is not a de Polignac number, because 555971797 - 2¹¹ = 555969749 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 (555971737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277985898 + 277985899.

It is an arithmetic number, because the mean of its divisors is an integer number (277985899).

Almost surely, 2^555971797 is an apocalyptic number.

It is an amenable number.

555971797 is a deficient number, since it is larger than the sum of its proper divisors (1).

555971797 is an equidigital number, since it uses as much as digits as its factorization.

555971797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3472875, while the sum is 55.

The square root of 555971797 is about 23579.0542007096. The cubic root of 555971797 is about 822.2759481254.

The spelling of 555971797 in words is "five hundred fifty-five million, nine hundred seventy-one thousand, seven hundred ninety-seven".