82085571 has 24 divisors (see below), whose sum is σ = 126859824. Its totient is φ = 50964480.

The previous prime is 82085569. The next prime is 82085599. The reversal of 82085571 is 17558028.

82085571 is a `hidden beast` number, since 8 + 2 + 0 + 85 + 571 = 666.

It is not a de Polignac number, because 82085571 - 2¹ = 82085569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82085071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12076 + ... + 17606.

It is an arithmetic number, because the mean of its divisors is an integer number (5285826).

Almost surely, 2^82085571 is an apocalyptic number.

82085571 is a deficient number, since it is larger than the sum of its proper divisors (44774253).

82085571 is a wasteful number, since it uses less digits than its factorization.

82085571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 82085571 is about 9060.1087741815. The cubic root of 82085571 is about 434.5992186513.

The spelling of 82085571 in words is "eighty-two million, eighty-five thousand, five hundred seventy-one".