86015521 has 8 divisors (see below), whose sum is σ = 86950080. Its totient is φ = 85086288.

The previous prime is 86015509. The next prime is 86015557. The reversal of 86015521 is 12551068.

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 86015521 - 2¹³ = 86007329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86015521.

It is not an unprimeable number, because it can be changed into a prime (86015591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36775 + ... + 39043.

It is an arithmetic number, because the mean of its divisors is an integer number (10868760).

Almost surely, 2^86015521 is an apocalyptic number.

It is an amenable number.

86015521 is a deficient number, since it is larger than the sum of its proper divisors (934559).

86015521 is a wasteful number, since it uses less digits than its factorization.

86015521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 86015521 is about 9274.4552939782. The cubic root of 86015521 is about 441.4270488217.

Adding to 86015521 its reverse (12551068), we get a palindrome (98566589).

The spelling of 86015521 in words is "eighty-six million, fifteen thousand, five hundred twenty-one".