82505583 has 6 divisors (see below), whose sum is σ = 119174744. Its totient is φ = 55003716.

The previous prime is 82505567. The next prime is 82505593. The reversal of 82505583 is 38550528.

It is not a de Polignac number, because 82505583 - 2⁴ = 82505567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82505593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4583635 + ... + 4583652.

Almost surely, 2^82505583 is an apocalyptic number.

82505583 is a deficient number, since it is larger than the sum of its proper divisors (36669161).

82505583 is a wasteful number, since it uses less digits than its factorization.

82505583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167293 (or 9167290 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 82505583 is about 9083.2583911282. The cubic root of 82505583 is about 435.3392043127.

The spelling of 82505583 in words is "eighty-two million, five hundred five thousand, five hundred eighty-three".