82243585 has 4 divisors (see below), whose sum is σ = 98692308. Its totient is φ = 65794864.

The previous prime is 82243583. The next prime is 82243591. The reversal of 82243585 is 58534228.

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 58507201 + 23736384 = 7649^2 + 4872^2 .

It is a cyclic number.

It is not a de Polignac number, because 82243585 - 2¹ = 82243583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82243583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8224354 + ... + 8224363.

It is an arithmetic number, because the mean of its divisors is an integer number (24673077).

Almost surely, 2^82243585 is an apocalyptic number.

It is an amenable number.

82243585 is a deficient number, since it is larger than the sum of its proper divisors (16448723).

82243585 is a wasteful number, since it uses less digits than its factorization.

82243585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16448722.

The product of its digits is 76800, while the sum is 37.

The square root of 82243585 is about 9068.8248963137. The cubic root of 82243585 is about 434.8779064577.

It can be divided in two parts, 82243 and 585, that added together give a palindrome (82828).

The spelling of 82243585 in words is "eighty-two million, two hundred forty-three thousand, five hundred eighty-five".