82117371 has 8 divisors (see below), whose sum is σ = 125131264. Its totient is φ = 46924200.

The previous prime is 82117369. The next prime is 82117381. The reversal of 82117371 is 17371128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82117371 - 2¹ = 82117369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82117381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955155 + ... + 1955196.

It is an arithmetic number, because the mean of its divisors is an integer number (15641408).

Almost surely, 2^82117371 is an apocalyptic number.

82117371 is a deficient number, since it is larger than the sum of its proper divisors (43013893).

82117371 is a wasteful number, since it uses less digits than its factorization.

82117371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910361.

The product of its digits is 2352, while the sum is 30.

The square root of 82117371 is about 9061.8635500652. The cubic root of 82117371 is about 434.6553327393.

Adding to 82117371 its reverse (17371128), we get a palindrome (99488499).

The spelling of 82117371 in words is "eighty-two million, one hundred seventeen thousand, three hundred seventy-one".