8155001 has 2 divisors, whose sum is σ = 8155002. Its totient is φ = 8155000.

The previous prime is 8154983. The next prime is 8155013. The reversal of 8155001 is 1005518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 89401 = 2840^2 + 299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8155001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8155031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077500 + 4077501.

It is an arithmetic number, because the mean of its divisors is an integer number (4077501).

Almost surely, 2^8155001 is an apocalyptic number.

It is an amenable number.

8155001 is a deficient number, since it is larger than the sum of its proper divisors (1).

8155001 is an equidigital number, since it uses as much as digits as its factorization.

8155001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 8155001 is about 2855.6962373474. The cubic root of 8155001 is about 201.2834215291.

The spelling of 8155001 in words is "eight million, one hundred fifty-five thousand, one".