8215001 has 2 divisors, whose sum is σ = 8215002. Its totient is φ = 8215000.

The previous prime is 8214953. The next prime is 8215043. The reversal of 8215001 is 1005128.

8215001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6255001 + 1960000 = 2501^2 + 1400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8215001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8215061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4107500 + 4107501.

It is an arithmetic number, because the mean of its divisors is an integer number (4107501).

Almost surely, 2^8215001 is an apocalyptic number.

It is an amenable number.

8215001 is a deficient number, since it is larger than the sum of its proper divisors (1).

8215001 is an equidigital number, since it uses as much as digits as its factorization.

8215001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 8215001 is about 2866.1823040414. The cubic root of 8215001 is about 201.7758599367.

The spelling of 8215001 in words is "eight million, two hundred fifteen thousand, one".