82297217 has 2 divisors, whose sum is σ = 82297218. Its totient is φ = 82297216.

The previous prime is 82297211. The next prime is 82297253. The reversal of 82297217 is 71279228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60357361 + 21939856 = 7769^2 + 4684^2 .

It is a cyclic number.

It is not a de Polignac number, because 82297217 - 2²⁰ = 81248641 is a prime.

It is not a weakly prime, because it can be changed into another prime (82297211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41148608 + 41148609.

It is an arithmetic number, because the mean of its divisors is an integer number (41148609).

Almost surely, 2^82297217 is an apocalyptic number.

It is an amenable number.

82297217 is a deficient number, since it is larger than the sum of its proper divisors (1).

82297217 is an equidigital number, since it uses as much as digits as its factorization.

82297217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 82297217 is about 9071.7813575945. The cubic root of 82297217 is about 434.9724155671.

The spelling of 82297217 in words is "eighty-two million, two hundred ninety-seven thousand, two hundred seventeen".