2855783 has 4 divisors (see below), whose sum is σ = 3263760. Its totient is φ = 2447808.

The previous prime is 2855761. The next prime is 2855791. The reversal of 2855783 is 3875582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2855783 - 2¹⁴ = 2839399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855183) 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 in 3 ways as a sum of consecutive naturals, for example, 203978 + ... + 203991.

It is an arithmetic number, because the mean of its divisors is an integer number (815940).

2^2855783 is an apocalyptic number.

2855783 is a deficient number, since it is larger than the sum of its proper divisors (407977).

2855783 is an equidigital number, since it uses as much as digits as its factorization.

2855783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407976.

The product of its digits is 67200, while the sum is 38.

The square root of 2855783 is about 1689.9062104152. The cubic root of 2855783 is about 141.8758254527.

The spelling of 2855783 in words is "two million, eight hundred fifty-five thousand, seven hundred eighty-three".