86195257 has 8 divisors (see below), whose sum is σ = 87775880. Its totient is φ = 84620160.

The previous prime is 86195203. The next prime is 86195269. The reversal of 86195257 is 75259168.

It can be written as a sum of positive squares in 4 ways, for example, as 2601 + 86192656 = 51^2 + 9284^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86195257 - 2¹⁹ = 85670969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86195657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42253 + ... + 44245.

It is an arithmetic number, because the mean of its divisors is an integer number (10971985).

Almost surely, 2^86195257 is an apocalyptic number.

It is an amenable number.

86195257 is a deficient number, since it is larger than the sum of its proper divisors (1580623).

86195257 is a wasteful number, since it uses less digits than its factorization.

86195257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763.

The product of its digits is 151200, while the sum is 43.

The square root of 86195257 is about 9284.1400786503. The cubic root of 86195257 is about 441.7343000892.

The spelling of 86195257 in words is "eighty-six million, one hundred ninety-five thousand, two hundred fifty-seven".