2851087 has 4 divisors (see below), whose sum is σ = 3018816. Its totient is φ = 2683360.

The previous prime is 2851081. The next prime is 2851091. The reversal of 2851087 is 7801582.

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 2851087 - 2⁷ = 2850959 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 83839 + ... + 83872.

It is an arithmetic number, because the mean of its divisors is an integer number (754704).

2^2851087 is an apocalyptic number.

2851087 is a deficient number, since it is larger than the sum of its proper divisors (167729).

2851087 is a wasteful number, since it uses less digits than its factorization.

2851087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167728.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2851087 is about 1688.5162125369. The cubic root of 2851087 is about 141.7980167397.

It can be divided in two parts, 28 and 51087, that added together give a palindrome (51115).

The spelling of 2851087 in words is "two million, eight hundred fifty-one thousand, eighty-seven".