89521085 has 4 divisors (see below), whose sum is σ = 107425308. Its totient is φ = 71616864.

The previous prime is 89521079. The next prime is 89521097. The reversal of 89521085 is 58012598.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53963716 + 35557369 = 7346^2 + 5963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89521085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8952104 + ... + 8952113.

It is an arithmetic number, because the mean of its divisors is an integer number (26856327).

Almost surely, 2^89521085 is an apocalyptic number.

It is an amenable number.

89521085 is a deficient number, since it is larger than the sum of its proper divisors (17904223).

89521085 is a wasteful number, since it uses less digits than its factorization.

89521085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17904222.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 89521085 is about 9461.5582754639. The cubic root of 89521085 is about 447.3441672069.

The spelling of 89521085 in words is "eighty-nine million, five hundred twenty-one thousand, eighty-five".