8321851 has 2 divisors, whose sum is σ = 8321852. Its totient is φ = 8321850.

The previous prime is 8321843. The next prime is 8321861. The reversal of 8321851 is 1581238.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8321851 - 2³ = 8321843 is a prime.

It is not a weakly prime, because it can be changed into another prime (8321801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160925 + 4160926.

It is an arithmetic number, because the mean of its divisors is an integer number (4160926).

Almost surely, 2^8321851 is an apocalyptic number.

8321851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8321851 is an equidigital number, since it uses as much as digits as its factorization.

8321851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 8321851 is about 2884.7618619221. The cubic root of 8321851 is about 202.6469065573.

The spelling of 8321851 in words is "eight million, three hundred twenty-one thousand, eight hundred fifty-one".