56855567 has 2 divisors, whose sum is σ = 56855568. Its totient is φ = 56855566.

The previous prime is 56855507. The next prime is 56855641. The reversal of 56855567 is 76555865.

56855567 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 56855567 - 2¹⁸ = 56593423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56855507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28427783 + 28427784.

It is an arithmetic number, because the mean of its divisors is an integer number (28427784).

Almost surely, 2^56855567 is an apocalyptic number.

56855567 is a deficient number, since it is larger than the sum of its proper divisors (1).

56855567 is an equidigital number, since it uses as much as digits as its factorization.

56855567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 47.

The square root of 56855567 is about 7540.2630590716. The cubic root of 56855567 is about 384.5247793744.

The spelling of 56855567 in words is "fifty-six million, eight hundred fifty-five thousand, five hundred sixty-seven".