86181001 has 2 divisors, whose sum is σ = 86181002. Its totient is φ = 86181000.

The previous prime is 86180971. The next prime is 86181019. The reversal of 86181001 is 10018168.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 28344976 = 7605^2 + 5324^2 .

It is a cyclic number.

It is not a de Polignac number, because 86181001 - 2⁷ = 86180873 is a prime.

It is not a weakly prime, because it can be changed into another prime (86181031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43090500 + 43090501.

It is an arithmetic number, because the mean of its divisors is an integer number (43090501).

Almost surely, 2^86181001 is an apocalyptic number.

It is an amenable number.

86181001 is a deficient number, since it is larger than the sum of its proper divisors (1).

86181001 is an equidigital number, since it uses as much as digits as its factorization.

86181001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 86181001 is about 9283.3722859745. The cubic root of 86181001 is about 441.7099456502.

Adding to 86181001 its reverse (10018168), we get a palindrome (96199169).

The spelling of 86181001 in words is "eighty-six million, one hundred eighty-one thousand, one".