86391051 has 8 divisors (see below), whose sum is σ = 116265024. Its totient is φ = 57055560.

The previous prime is 86391049. The next prime is 86391061. The reversal of 86391051 is 15019368.

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

It is not a de Polignac number, because 86391051 - 2¹ = 86391049 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (86391061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134245 + ... + 134886.

It is an arithmetic number, because the mean of its divisors is an integer number (14533128).

Almost surely, 2^86391051 is an apocalyptic number.

86391051 is a deficient number, since it is larger than the sum of its proper divisors (29873973).

86391051 is a wasteful number, since it uses less digits than its factorization.

86391051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269241.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 86391051 is about 9294.6786388772. The cubic root of 86391051 is about 442.0685161627.

The spelling of 86391051 in words is "eighty-six million, three hundred ninety-one thousand, fifty-one".