82539845 has 18 divisors (see below), whose sum is σ = 105658962. Its totient is φ = 61887616.

The previous prime is 82539841. The next prime is 82539851. The reversal of 82539845 is 54893528.

It can be written as a sum of positive squares in 3 ways, for example, as 27646564 + 54893281 = 5258^2 + 7409^2 .

It is not a de Polignac number, because 82539845 - 2² = 82539841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82539796 and 82539805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82539841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 345236 + ... + 345474.

Almost surely, 2^82539845 is an apocalyptic number.

82539845 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82539845 is a deficient number, since it is larger than the sum of its proper divisors (23119117).

82539845 is an equidigital number, since it uses as much as digits as its factorization.

82539845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 261 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 82539845 is about 9085.1441925816. The cubic root of 82539845 is about 435.3994569126.

The spelling of 82539845 in words is "eighty-two million, five hundred thirty-nine thousand, eight hundred forty-five".