2851787 has 2 divisors, whose sum is σ = 2851788. Its totient is φ = 2851786.

The previous prime is 2851777. The next prime is 2851789. The reversal of 2851787 is 7871582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2851787 - 2¹⁰ = 2850763 is a prime.

Together with 2851789, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2851787.

It is not a weakly prime, because it can be changed into another prime (2851789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425893 + 1425894.

It is an arithmetic number, because the mean of its divisors is an integer number (1425894).

2^2851787 is an apocalyptic number.

2851787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851787 is an equidigital number, since it uses as much as digits as its factorization.

2851787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 38.

The square root of 2851787 is about 1688.7234823973. The cubic root of 2851787 is about 141.8096205583.

It can be divided in two parts, 28 and 51787, that added together give a palindrome (51815).

The spelling of 2851787 in words is "two million, eight hundred fifty-one thousand, seven hundred eighty-seven".