855848563 has 2 divisors, whose sum is σ = 855848564. Its totient is φ = 855848562.

The previous prime is 855848549. The next prime is 855848579. The reversal of 855848563 is 365848558.

855848563 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 855848563 - 2²¹ = 853751411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855848563.

It is not a weakly prime, because it can be changed into another prime (855848503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427924281 + 427924282.

It is an arithmetic number, because the mean of its divisors is an integer number (427924282).

Almost surely, 2^855848563 is an apocalyptic number.

855848563 is a deficient number, since it is larger than the sum of its proper divisors (1).

855848563 is an equidigital number, since it uses as much as digits as its factorization.

855848563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608000, while the sum is 52.

The square root of 855848563 is about 29254.8895571322. The cubic root of 855848563 is about 949.4358841120.

It can be divided in two parts, 8558 and 48563, that added together give a square (57121 = 239²).

The spelling of 855848563 in words is "eight hundred fifty-five million, eight hundred forty-eight thousand, five hundred sixty-three".