2855765 has 16 divisors (see below), whose sum is σ = 3775680. Its totient is φ = 2056320.

The previous prime is 2855761. The next prime is 2855791. The reversal of 2855765 is 5675582.

It is not a de Polignac number, because 2855765 - 2² = 2855761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7346 + ... + 7724.

It is an arithmetic number, because the mean of its divisors is an integer number (235980).

2^2855765 is an apocalyptic number.

It is an amenable number.

2855765 is a deficient number, since it is larger than the sum of its proper divisors (919915).

2855765 is a wasteful number, since it uses less digits than its factorization.

2855765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 84000, while the sum is 38.

The square root of 2855765 is about 1689.9008846675. The cubic root of 2855765 is about 141.8755273710.

The spelling of 2855765 in words is "two million, eight hundred fifty-five thousand, seven hundred sixty-five".