555497791 has 2 divisors, whose sum is σ = 555497792. Its totient is φ = 555497790.

The previous prime is 555497753. The next prime is 555497819. The reversal of 555497791 is 197794555.

555497791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555497791 - 2¹⁵ = 555465023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555497731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277748895 + 277748896.

It is an arithmetic number, because the mean of its divisors is an integer number (277748896).

Almost surely, 2^555497791 is an apocalyptic number.

555497791 is a deficient number, since it is larger than the sum of its proper divisors (1).

555497791 is an equidigital number, since it uses as much as digits as its factorization.

555497791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1984500, while the sum is 52.

The square root of 555497791 is about 23569.0006364292. Note that the first 3 decimals coincide. The cubic root of 555497791 is about 822.0421985271.

The spelling of 555497791 in words is "five hundred fifty-five million, four hundred ninety-seven thousand, seven hundred ninety-one".