86155515 has 32 divisors (see below), whose sum is σ = 153561600. Its totient is φ = 45830880.

The previous prime is 86155513. The next prime is 86155543. The reversal of 86155515 is 51555168.

It is not a de Polignac number, because 86155515 - 2¹ = 86155513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86155515.

It is not an unprimeable number, because it can be changed into a prime (86155513) 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 31 ways as a sum of consecutive naturals, for example, 83050 + ... + 84080.

It is an arithmetic number, because the mean of its divisors is an integer number (4798800).

Almost surely, 2^86155515 is an apocalyptic number.

86155515 is a deficient number, since it is larger than the sum of its proper divisors (67406085).

86155515 is a wasteful number, since it uses less digits than its factorization.

86155515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1658 counting only the distinct ones).

The product of its digits is 30000, while the sum is 36.

The square root of 86155515 is about 9281.9995151907. Note that the first 3 decimals coincide. The cubic root of 86155515 is about 441.6663995885. Note that the first 3 decimals are identical.

The spelling of 86155515 in words is "eighty-six million, one hundred fifty-five thousand, five hundred fifteen".