2855761 has 2 divisors, whose sum is σ = 2855762. Its totient is φ = 2855760.

The previous prime is 2855747. The next prime is 2855791. The reversal of 2855761 is 1675582.

2855761 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 can be written as a sum of positive squares in only one way, i.e., 2624400 + 231361 = 1620^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 2855761 - 2⁵ = 2855729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2855701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427880 + 1427881.

It is an arithmetic number, because the mean of its divisors is an integer number (1427881).

2^2855761 is an apocalyptic number.

It is an amenable number.

2855761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855761 is an equidigital number, since it uses as much as digits as its factorization.

2855761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 2855761 is about 1689.8997011657. The cubic root of 2855761 is about 141.8754611304.

The spelling of 2855761 in words is "two million, eight hundred fifty-five thousand, seven hundred sixty-one".