82315297 has 8 divisors (see below), whose sum is σ = 82918152. Its totient is φ = 81715200.

The previous prime is 82315279. The next prime is 82315313. The reversal of 82315297 is 79251328.

It can be written as a sum of positive squares in 4 ways, for example, as 52186176 + 30129121 = 7224^2 + 5489^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 82315297 - 2¹⁹ = 81791009 is a prime.

It is a deceptive number, since it divides R_82315296.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82315897) 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, 128097 + ... + 128737.

It is an arithmetic number, because the mean of its divisors is an integer number (10364769).

Almost surely, 2^82315297 is an apocalyptic number.

It is an amenable number.

82315297 is a deficient number, since it is larger than the sum of its proper divisors (602855).

82315297 is a wasteful number, since it uses less digits than its factorization.

82315297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 30240, while the sum is 37.

The square root of 82315297 is about 9072.7777995496. Note that the first 4 decimals coincide. The cubic root of 82315297 is about 435.0042664839.

The spelling of 82315297 in words is "eighty-two million, three hundred fifteen thousand, two hundred ninety-seven".