8201117 has 4 divisors (see below), whose sum is σ = 8209020. Its totient is φ = 8193216.

The previous prime is 8201111. The next prime is 8201153. The reversal of 8201117 is 7111028.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4414201 + 3786916 = 2101^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 8201117 - 2⁴ = 8201101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8201111) 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, 2108 + ... + 4565.

It is an arithmetic number, because the mean of its divisors is an integer number (2052255).

Almost surely, 2^8201117 is an apocalyptic number.

It is an amenable number.

8201117 is a deficient number, since it is larger than the sum of its proper divisors (7903).

8201117 is a wasteful number, since it uses less digits than its factorization.

8201117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7902.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 8201117 is about 2863.7592426739. The cubic root of 8201117 is about 201.6621234624.

It can be divided in two parts, 82011 and 17, that added together give a palindrome (82028).

The spelling of 8201117 in words is "eight million, two hundred one thousand, one hundred seventeen".