82205317 has 4 divisors (see below), whose sum is σ = 82225120. Its totient is φ = 82185516.

The previous prime is 82205311. The next prime is 82205329. The reversal of 82205317 is 71350228.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82205317 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 (82205311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017 + ... + 12862.

It is an arithmetic number, because the mean of its divisors is an integer number (20556280).

Almost surely, 2^82205317 is an apocalyptic number.

It is an amenable number.

82205317 is a deficient number, since it is larger than the sum of its proper divisors (19803).

82205317 is a wasteful number, since it uses less digits than its factorization.

82205317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19802.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 82205317 is about 9066.7147854115. The cubic root of 82205317 is about 434.8104463247.

The spelling of 82205317 in words is "eighty-two million, two hundred five thousand, three hundred seventeen".