86571137 has 2 divisors, whose sum is σ = 86571138. Its totient is φ = 86571136.

The previous prime is 86571109. The next prime is 86571151. The reversal of 86571137 is 73117568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85396081 + 1175056 = 9241^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 86571137 - 2⁶ = 86571073 is a prime.

It is a super-2 number, since 2×86571137² = 14989123522945538, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86571137.

It is not a weakly prime, because it can be changed into another prime (86571197) 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 as a sum of consecutive naturals, namely, 43285568 + 43285569.

It is an arithmetic number, because the mean of its divisors is an integer number (43285569).

Almost surely, 2^86571137 is an apocalyptic number.

It is an amenable number.

86571137 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571137 is an equidigital number, since it uses as much as digits as its factorization.

86571137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

The square root of 86571137 is about 9304.3611817255. The cubic root of 86571137 is about 442.3754734873.

The spelling of 86571137 in words is "eighty-six million, five hundred seventy-one thousand, one hundred thirty-seven".