86075521 has 4 divisors (see below), whose sum is σ = 98372032. Its totient is φ = 73779012.

The previous prime is 86075497. The next prime is 86075537. The reversal of 86075521 is 12557068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86075521 - 2⁹ = 86075009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86075581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6148245 + ... + 6148258.

It is an arithmetic number, because the mean of its divisors is an integer number (24593008).

Almost surely, 2^86075521 is an apocalyptic number.

It is an amenable number.

86075521 is a deficient number, since it is larger than the sum of its proper divisors (12296511).

86075521 is a wasteful number, since it uses less digits than its factorization.

86075521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296510.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 86075521 is about 9277.6894214023. The cubic root of 86075521 is about 441.5296638950.

The spelling of 86075521 in words is "eighty-six million, seventy-five thousand, five hundred twenty-one".