86511001 has 2 divisors, whose sum is σ = 86511002. Its totient is φ = 86511000.

The previous prime is 86510989. The next prime is 86511013. The reversal of 86511001 is 10011568.

It is a balanced prime because it is at equal distance from previous prime (86510989) and next prime (86511013).

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 30261001 = 7500^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 86511001 - 2¹³ = 86502809 is a prime.

It is not a weakly prime, because it can be changed into another prime (86511041) 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, 43255500 + 43255501.

It is an arithmetic number, because the mean of its divisors is an integer number (43255501).

Almost surely, 2^86511001 is an apocalyptic number.

It is an amenable number.

86511001 is a deficient number, since it is larger than the sum of its proper divisors (1).

86511001 is an equidigital number, since it uses as much as digits as its factorization.

86511001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 86511001 is about 9301.1290174903. The cubic root of 86511001 is about 442.2730188103.

Adding to 86511001 its reverse (10011568), we get a palindrome (96522569).

The spelling of 86511001 in words is "eighty-six million, five hundred eleven thousand, one".