2855881 has 16 divisors (see below), whose sum is σ = 3504384. Its totient is φ = 2271744.

The previous prime is 2855873. The next prime is 2855893. The reversal of 2855881 is 1885582.

It is not a de Polignac number, because 2855881 - 2³ = 2855873 is a prime.

It is a super-2 number, since 2×2855881² = 16312112572322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2855881.

It is not an unprimeable number, because it can be changed into a prime (2855851) 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, 12141 + ... + 12373.

It is an arithmetic number, because the mean of its divisors is an integer number (219024).

2^2855881 is an apocalyptic number.

It is an amenable number.

2855881 is a deficient number, since it is larger than the sum of its proper divisors (648503).

2855881 is a wasteful number, since it uses less digits than its factorization.

2855881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its digits is 25600, while the sum is 37.

The square root of 2855881 is about 1689.9352058585. The cubic root of 2855881 is about 141.8774483202.

Subtracting from 2855881 its reverse (1885582), we obtain a cube (970299 = 99³).

The spelling of 2855881 in words is "two million, eight hundred fifty-five thousand, eight hundred eighty-one".