86445137 has 2 divisors, whose sum is σ = 86445138. Its totient is φ = 86445136.

The previous prime is 86445133. The next prime is 86445199. The reversal of 86445137 is 73154468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 4289041 = 9064^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 86445137 - 2² = 86445133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86445137.

It is not a weakly prime, because it can be changed into another prime (86445131) 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, 43222568 + 43222569.

It is an arithmetic number, because the mean of its divisors is an integer number (43222569).

Almost surely, 2^86445137 is an apocalyptic number.

It is an amenable number.

86445137 is a deficient number, since it is larger than the sum of its proper divisors (1).

86445137 is an equidigital number, since it uses as much as digits as its factorization.

86445137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 86445137 is about 9297.5876978924. The cubic root of 86445137 is about 442.1607507540.

The spelling of 86445137 in words is "eighty-six million, four hundred forty-five thousand, one hundred thirty-seven".