89581285 has 4 divisors (see below), whose sum is σ = 107497548. Its totient is φ = 71665024.

The previous prime is 89581267. The next prime is 89581301. The reversal of 89581285 is 58218598.

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 17297281 + 72284004 = 4159^2 + 8502^2 .

It is a cyclic number.

It is not a de Polignac number, because 89581285 - 2⁷ = 89581157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958124 + ... + 8958133.

It is an arithmetic number, because the mean of its divisors is an integer number (26874387).

Almost surely, 2^89581285 is an apocalyptic number.

It is an amenable number.

89581285 is a deficient number, since it is larger than the sum of its proper divisors (17916263).

89581285 is a wasteful number, since it uses less digits than its factorization.

89581285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17916262.

The product of its digits is 230400, while the sum is 46.

The square root of 89581285 is about 9464.7390349655. The cubic root of 89581285 is about 447.4444195091. Note that the first 4 decimals are identical.

The spelling of 89581285 in words is "eighty-nine million, five hundred eighty-one thousand, two hundred eighty-five".