86571049 has 12 divisors (see below), whose sum is σ = 93611700. Its totient is φ = 80000640.

The previous prime is 86571047. The next prime is 86571071. The reversal of 86571049 is 94017568.

It can be written as a sum of positive squares in 2 ways, for example, as 14440000 + 72131049 = 3800^2 + 8493^2 .

It is not a de Polignac number, because 86571049 - 2¹ = 86571047 is a prime.

It is a super-3 number, since 3×86571049³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86571041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11877 + ... + 17725.

It is an arithmetic number, because the mean of its divisors is an integer number (7800975).

Almost surely, 2^86571049 is an apocalyptic number.

It is an amenable number.

86571049 is a deficient number, since it is larger than the sum of its proper divisors (7040651).

86571049 is a wasteful number, since it uses less digits than its factorization.

86571049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 86571049 is about 9304.3564527591. The cubic root of 86571049 is about 442.3753235950.

The spelling of 86571049 in words is "eighty-six million, five hundred seventy-one thousand, forty-nine".