2855139 has 16 divisors (see below), whose sum is σ = 4408320. Its totient is φ = 1609920.

The previous prime is 2855129. The next prime is 2855141. The reversal of 2855139 is 9315582.

2855139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2855139 - 2⁵ = 2855107 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 8⁶ + 5⁸ + 5⁹ + 1 + 3¹¹ + 9⁴ .

2855139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2855119) 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 in 15 ways as a sum of consecutive naturals, for example, 799 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (275520).

2^2855139 is an apocalyptic number.

2855139 is a deficient number, since it is larger than the sum of its proper divisors (1553181).

2855139 is a wasteful number, since it uses less digits than its factorization.

2855139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 10800, while the sum is 33.

The square root of 2855139 is about 1689.7156565529. The cubic root of 2855139 is about 141.8651599714.

The spelling of 2855139 in words is "two million, eight hundred fifty-five thousand, one hundred thirty-nine".