145089 has 24 divisors (see below), whose sum is σ = 249600. Its totient is φ = 81144.

The previous prime is 145069. The next prime is 145091. The reversal of 145089 is 980541.

It is not a de Polignac number, because 145089 - 2⁷ = 144961 is a prime.

145089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (145009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3064 + ... + 3110.

It is an arithmetic number, because the mean of its divisors is an integer number (10400).

2¹⁴⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

145089 is a deficient number, since it is larger than the sum of its proper divisors (104511).

145089 is an equidigital number, since it uses as much as digits as its factorization.

145089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 145089 is about 380.9055000916. The cubic root of 145089 is about 52.5466252465.

The spelling of 145089 in words is "one hundred forty-five thousand, eighty-nine".