82195117 has 2 divisors, whose sum is σ = 82195118. Its totient is φ = 82195116.

The previous prime is 82195109. The next prime is 82195147. The reversal of 82195117 is 71159128.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53743561 + 28451556 = 7331^2 + 5334^2 .

It is a cyclic number.

It is not a de Polignac number, because 82195117 - 2³ = 82195109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82195147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41097558 + 41097559.

It is an arithmetic number, because the mean of its divisors is an integer number (41097559).

Almost surely, 2^82195117 is an apocalyptic number.

It is an amenable number.

82195117 is a deficient number, since it is larger than the sum of its proper divisors (1).

82195117 is an equidigital number, since it uses as much as digits as its factorization.

82195117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 34.

The square root of 82195117 is about 9066.1522709471. The cubic root of 82195117 is about 434.7924618838.

The spelling of 82195117 in words is "eighty-two million, one hundred ninety-five thousand, one hundred seventeen".