89545 has 4 divisors (see below), whose sum is σ = 107460. Its totient is φ = 71632.

The previous prime is 89533. The next prime is 89561. The reversal of 89545 is 54598.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54598 = 2 ⋅27299.

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 53824 = 189^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 89545 - 2⁵ = 89513 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

89545 is a lucky number.

It is a zygodrome in base 3.

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, 8950 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (26865).

2⁸⁹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

89545 is a deficient number, since it is larger than the sum of its proper divisors (17915).

89545 is a wasteful number, since it uses less digits than its factorization.

89545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17914.

The product of its digits is 7200, while the sum is 31.

The square root of 89545 is about 299.2407057872. The cubic root of 89545 is about 44.7383998729.

The spelling of 89545 in words is "eighty-nine thousand, five hundred forty-five".