2102851 has 2 divisors, whose sum is σ = 2102852. Its totient is φ = 2102850.

The previous prime is 2102839. The next prime is 2102857. The reversal of 2102851 is 1582012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2102851 - 2¹¹ = 2100803 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051425 + 1051426.

It is an arithmetic number, because the mean of its divisors is an integer number (1051426).

2^2102851 is an apocalyptic number.

2102851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102851 is an equidigital number, since it uses as much as digits as its factorization.

2102851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2102851 is about 1450.1210294317. The cubic root of 2102851 is about 128.1158415821.

Adding to 2102851 its reverse (1582012), we get a palindrome (3684863).

The spelling of 2102851 in words is "two million, one hundred two thousand, eight hundred fifty-one".