82179297 has 6 divisors (see below), whose sum is σ = 118703442. Its totient is φ = 54786192.

The previous prime is 82179263. The next prime is 82179329. The reversal of 82179297 is 79297128.

It can be written as a sum of positive squares in only one way, i.e., 78163281 + 4016016 = 8841^2 + 2004^2 .

It is not a de Polignac number, because 82179297 - 2¹⁹ = 81655009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82179247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4565508 + ... + 4565525.

It is an arithmetic number, because the mean of its divisors is an integer number (19783907).

Almost surely, 2^82179297 is an apocalyptic number.

It is an amenable number.

82179297 is a deficient number, since it is larger than the sum of its proper divisors (36524145).

82179297 is a wasteful number, since it uses less digits than its factorization.

82179297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131039 (or 9131036 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 82179297 is about 9065.2797529916. The cubic root of 82179297 is about 434.7645654250.

The spelling of 82179297 in words is "eighty-two million, one hundred seventy-nine thousand, two hundred ninety-seven".