82315279 has 2 divisors, whose sum is σ = 82315280. Its totient is φ = 82315278.

The previous prime is 82315273. The next prime is 82315313. The reversal of 82315279 is 97251328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82315279 - 2³ = 82315271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82315271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41157639 + 41157640.

It is an arithmetic number, because the mean of its divisors is an integer number (41157640).

Almost surely, 2^82315279 is an apocalyptic number.

82315279 is a deficient number, since it is larger than the sum of its proper divisors (1).

82315279 is an equidigital number, since it uses as much as digits as its factorization.

82315279 is an evil number, because the sum of its binary digits is even.

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

The square root of 82315279 is about 9072.7768075711. The cubic root of 82315279 is about 435.0042347762.

The spelling of 82315279 in words is "eighty-two million, three hundred fifteen thousand, two hundred seventy-nine".