82516585 has 4 divisors (see below), whose sum is σ = 99019908. Its totient is φ = 66013264.

The previous prime is 82516583. The next prime is 82516619. The reversal of 82516585 is 58561528.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23164969 + 59351616 = 4813^2 + 7704^2 .

It is a cyclic number.

It is not a de Polignac number, because 82516585 - 2¹ = 82516583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82516583) 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, 8251654 + ... + 8251663.

It is an arithmetic number, because the mean of its divisors is an integer number (24754977).

Almost surely, 2^82516585 is an apocalyptic number.

It is an amenable number.

82516585 is a deficient number, since it is larger than the sum of its proper divisors (16503323).

82516585 is a wasteful number, since it uses less digits than its factorization.

82516585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16503322.

The product of its digits is 96000, while the sum is 40.

The square root of 82516585 is about 9083.8639906154. The cubic root of 82516585 is about 435.3585540701.

The spelling of 82516585 in words is "eighty-two million, five hundred sixteen thousand, five hundred eighty-five".