82415197 has 2 divisors, whose sum is σ = 82415198. Its totient is φ = 82415196.

The previous prime is 82415191. The next prime is 82415237. The reversal of 82415197 is 79151428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 31877316 = 7109^2 + 5646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82415197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82415191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41207598 + 41207599.

It is an arithmetic number, because the mean of its divisors is an integer number (41207599).

Almost surely, 2^82415197 is an apocalyptic number.

It is an amenable number.

82415197 is a deficient number, since it is larger than the sum of its proper divisors (1).

82415197 is an equidigital number, since it uses as much as digits as its factorization.

82415197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 82415197 is about 9078.2816105252. The cubic root of 82415197 is about 435.1801728646.

The spelling of 82415197 in words is "eighty-two million, four hundred fifteen thousand, one hundred ninety-seven".