86078155 has 4 divisors (see below), whose sum is σ = 103293792. Its totient is φ = 68862520.

The previous prime is 86078149. The next prime is 86078171. The reversal of 86078155 is 55187068.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86078155 - 2⁹ = 86077643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 8607811 + ... + 8607820.

It is an arithmetic number, because the mean of its divisors is an integer number (25823448).

Almost surely, 2^86078155 is an apocalyptic number.

86078155 is a deficient number, since it is larger than the sum of its proper divisors (17215637).

86078155 is a wasteful number, since it uses less digits than its factorization.

86078155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215636.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 86078155 is about 9277.8313737640. The cubic root of 86078155 is about 441.5341676039.

The spelling of 86078155 in words is "eighty-six million, seventy-eight thousand, one hundred fifty-five".