551040439 has 2 divisors, whose sum is σ = 551040440. Its totient is φ = 551040438.

The previous prime is 551040437. The next prime is 551040461. The reversal of 551040439 is 934040155.

551040439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551040439 - 2¹ = 551040437 is a prime.

Together with 551040437, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 551040439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551040437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275520219 + 275520220.

It is an arithmetic number, because the mean of its divisors is an integer number (275520220).

Almost surely, 2^551040439 is an apocalyptic number.

551040439 is a deficient number, since it is larger than the sum of its proper divisors (1).

551040439 is an equidigital number, since it uses as much as digits as its factorization.

551040439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 551040439 is about 23474.2505524671. The cubic root of 551040439 is about 819.8375838350.

The spelling of 551040439 in words is "five hundred fifty-one million, forty thousand, four hundred thirty-nine".