551656559 has 2 divisors, whose sum is σ = 551656560. Its totient is φ = 551656558.

The previous prime is 551656487. The next prime is 551656561. The reversal of 551656559 is 955656155.

551656559 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 a de Polignac number, because none of the positive numbers 2^k-551656559 is a prime.

Together with 551656561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551656759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275828279 + 275828280.

It is an arithmetic number, because the mean of its divisors is an integer number (275828280).

Almost surely, 2^551656559 is an apocalyptic number.

551656559 is a deficient number, since it is larger than the sum of its proper divisors (1).

551656559 is an equidigital number, since it uses as much as digits as its factorization.

551656559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1012500, while the sum is 47.

The square root of 551656559 is about 23487.3702018766. The cubic root of 551656559 is about 820.1430243285.

The spelling of 551656559 in words is "five hundred fifty-one million, six hundred fifty-six thousand, five hundred fifty-nine".