551766647 has 2 divisors, whose sum is σ = 551766648. Its totient is φ = 551766646.

The previous prime is 551766599. The next prime is 551766661. The reversal of 551766647 is 746667155.

551766647 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 551766647 - 2¹² = 551762551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551760647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275883323 + 275883324.

It is an arithmetic number, because the mean of its divisors is an integer number (275883324).

Almost surely, 2^551766647 is an apocalyptic number.

551766647 is a deficient number, since it is larger than the sum of its proper divisors (1).

551766647 is an equidigital number, since it uses as much as digits as its factorization.

551766647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The square root of 551766647 is about 23489.7136423584. The cubic root of 551766647 is about 820.1975763250.

The spelling of 551766647 in words is "five hundred fifty-one million, seven hundred sixty-six thousand, six hundred forty-seven".