82256539 has 4 divisors (see below), whose sum is σ = 82780624. Its totient is φ = 81732456.

The previous prime is 82256509. The next prime is 82256563. The reversal of 82256539 is 93565228.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82256539 - 2⁵ = 82256507 is a prime.

It is a super-2 number, since 2×82256539² = 13532276416517042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82256509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261807 + ... + 262120.

It is an arithmetic number, because the mean of its divisors is an integer number (20695156).

Almost surely, 2^82256539 is an apocalyptic number.

82256539 is a deficient number, since it is larger than the sum of its proper divisors (524085).

82256539 is a wasteful number, since it uses less digits than its factorization.

82256539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524084.

The product of its digits is 129600, while the sum is 40.

The square root of 82256539 is about 9069.5390731834. The cubic root of 82256539 is about 434.9007374691.

The spelling of 82256539 in words is "eighty-two million, two hundred fifty-six thousand, five hundred thirty-nine".