8500001 has 4 divisors (see below), whose sum is σ = 8509632. Its totient is φ = 8490372.

The previous prime is 8499979. The next prime is 8500007. The reversal of 8500001 is 1000058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000058 = 2 ⋅500029.

It is a cyclic number.

It is not a de Polignac number, because 8500001 - 2⁶ = 8499937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8500007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3341 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (2127408).

Almost surely, 2^8500001 is an apocalyptic number.

It is an amenable number.

8500001 is a deficient number, since it is larger than the sum of its proper divisors (9631).

8500001 is an equidigital number, since it uses as much as digits as its factorization.

8500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 8500001 is about 2915.4761189212. The cubic root of 8500001 is about 204.0827630991.

Adding to 8500001 its reverse (1000058), we get a palindrome (9500059).

The spelling of 8500001 in words is "eight million, five hundred thousand, one".