551000647 has 2 divisors, whose sum is σ = 551000648. Its totient is φ = 551000646.

The previous prime is 551000629. The next prime is 551000669. The reversal of 551000647 is 746000155.

551000647 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 551000647 - 2⁷ = 551000519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551000687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275500323 + 275500324.

It is an arithmetic number, because the mean of its divisors is an integer number (275500324).

Almost surely, 2^551000647 is an apocalyptic number.

551000647 is a deficient number, since it is larger than the sum of its proper divisors (1).

551000647 is an equidigital number, since it uses as much as digits as its factorization.

551000647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 551000647 is about 23473.4029701703. The cubic root of 551000647 is about 819.8178491899.

The spelling of 551000647 in words is "five hundred fifty-one million, six hundred forty-seven", and thus it is an aban number.