86105257 has 4 divisors (see below), whose sum is σ = 98406016. Its totient is φ = 73804500.

The previous prime is 86105189. The next prime is 86105267. The reversal of 86105257 is 75250168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86105257 - 2¹¹ = 86103209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86105267) 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 3 ways as a sum of consecutive naturals, for example, 6150369 + ... + 6150382.

It is an arithmetic number, because the mean of its divisors is an integer number (24601504).

Almost surely, 2^86105257 is an apocalyptic number.

It is an amenable number.

86105257 is a deficient number, since it is larger than the sum of its proper divisors (12300759).

86105257 is a wasteful number, since it uses less digits than its factorization.

86105257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12300758.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 86105257 is about 9279.2918372040. The cubic root of 86105257 is about 441.5805022531.

The spelling of 86105257 in words is "eighty-six million, one hundred five thousand, two hundred fifty-seven".