2851085 has 4 divisors (see below), whose sum is σ = 3421308. Its totient is φ = 2280864.

The previous prime is 2851081. The next prime is 2851091. The reversal of 2851085 is 5801582.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1965604 + 885481 = 1402^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851085 - 2² = 2851081 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 (2851081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285104 + ... + 285113.

It is an arithmetic number, because the mean of its divisors is an integer number (855327).

2^2851085 is an apocalyptic number.

It is an amenable number.

2851085 is a deficient number, since it is larger than the sum of its proper divisors (570223).

2851085 is an equidigital number, since it uses as much as digits as its factorization.

2851085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570222.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 2851085 is about 1688.5156203009. The cubic root of 2851085 is about 141.7979835832.

The spelling of 2851085 in words is "two million, eight hundred fifty-one thousand, eighty-five".