8509601 has 2 divisors, whose sum is σ = 8509602. Its totient is φ = 8509600.

The previous prime is 8509597. The next prime is 8509607. The reversal of 8509601 is 1069058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 1002001 = 2740^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 8509601 - 2² = 8509597 is a prime.

It is not a weakly prime, because it can be changed into another prime (8509607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4254800 + 4254801.

It is an arithmetic number, because the mean of its divisors is an integer number (4254801).

Almost surely, 2^8509601 is an apocalyptic number.

It is an amenable number.

8509601 is a deficient number, since it is larger than the sum of its proper divisors (1).

8509601 is an equidigital number, since it uses as much as digits as its factorization.

8509601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 8509601 is about 2917.1220406421. The cubic root of 8509601 is about 204.1595653414.

The spelling of 8509601 in words is "eight million, five hundred nine thousand, six hundred one".