8021851 has 2 divisors, whose sum is σ = 8021852. Its totient is φ = 8021850.

The previous prime is 8021833. The next prime is 8021863. The reversal of 8021851 is 1581208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8021851 - 2⁹ = 8021339 is a prime.

It is not a weakly prime, because it can be changed into another prime (8021801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4010925 + 4010926.

It is an arithmetic number, because the mean of its divisors is an integer number (4010926).

Almost surely, 2^8021851 is an apocalyptic number.

8021851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8021851 is an equidigital number, since it uses as much as digits as its factorization.

8021851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 8021851 is about 2832.2872382582. The cubic root of 8021851 is about 200.1819261309.

The spelling of 8021851 in words is "eight million, twenty-one thousand, eight hundred fifty-one".