86941521 has 12 divisors (see below), whose sum is σ = 125711872. Its totient is φ = 57901176.

The previous prime is 86941489. The next prime is 86941529. The reversal of 86941521 is 12514968.

It is not a de Polignac number, because 86941521 - 2⁵ = 86941489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86941529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5340 + ... + 14226.

Almost surely, 2^86941521 is an apocalyptic number.

It is an amenable number.

86941521 is a deficient number, since it is larger than the sum of its proper divisors (38770351).

86941521 is a wasteful number, since it uses less digits than its factorization.

86941521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980 (or 9977 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 86941521 is about 9324.2437226834. The cubic root of 86941521 is about 443.0054589839.

The spelling of 86941521 in words is "eighty-six million, nine hundred forty-one thousand, five hundred twenty-one".