86530521 has 48 divisors (see below), whose sum is σ = 149057280. Its totient is φ = 44140320.

The previous prime is 86530511. The next prime is 86530547. The reversal of 86530521 is 12503568.

It is not a de Polignac number, because 86530521 - 2¹⁰ = 86529497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86530511) 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 47 ways as a sum of consecutive naturals, for example, 94950 + ... + 95856.

It is an arithmetic number, because the mean of its divisors is an integer number (3105360).

Almost surely, 2^86530521 is an apocalyptic number.

It is an amenable number.

86530521 is a deficient number, since it is larger than the sum of its proper divisors (62526759).

86530521 is a wasteful number, since it uses less digits than its factorization.

86530521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 86530521 is about 9302.1782932816. The cubic root of 86530521 is about 442.3062805535.

The spelling of 86530521 in words is "eighty-six million, five hundred thirty thousand, five hundred twenty-one".