2587851 has 12 divisors (see below), whose sum is σ = 4272112. Its totient is φ = 1478736.

The previous prime is 2587847. The next prime is 2587861. The reversal of 2587851 is 1587852.

It is not a de Polignac number, because 2587851 - 2² = 2587847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2587801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20476 + ... + 20601.

2^2587851 is an apocalyptic number.

2587851 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2587851 is a deficient number, since it is larger than the sum of its proper divisors (1684261).

2587851 is a wasteful number, since it uses less digits than its factorization.

2587851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41090 (or 41087 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 2587851 is about 1608.6798935773. The cubic root of 2587851 is about 137.2923764556.

Subtracting from 2587851 its reverse (1587852), we obtain a palindrome (999999).

The spelling of 2587851 in words is "two million, five hundred eighty-seven thousand, eight hundred fifty-one".