555043397 has 2 divisors, whose sum is σ = 555043398. Its totient is φ = 555043396.

The previous prime is 555043393. The next prime is 555043399. The reversal of 555043397 is 793340555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500372161 + 54671236 = 22369^2 + 7394^2 .

It is a cyclic number.

It is not a de Polignac number, because 555043397 - 2² = 555043393 is a prime.

Together with 555043399, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_29096168 and since 555043397 and 29096168 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555043393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277521698 + 277521699.

It is an arithmetic number, because the mean of its divisors is an integer number (277521699).

Almost surely, 2^555043397 is an apocalyptic number.

It is an amenable number.

555043397 is a deficient number, since it is larger than the sum of its proper divisors (1).

555043397 is an equidigital number, since it uses as much as digits as its factorization.

555043397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283500, while the sum is 41.

The square root of 555043397 is about 23559.3590108050. The cubic root of 555043397 is about 821.8179954526.

The spelling of 555043397 in words is "five hundred fifty-five million, forty-three thousand, three hundred ninety-seven".