145308089 has 4 divisors (see below), whose sum is σ = 151625856. Its totient is φ = 138990324.

The previous prime is 145308077. The next prime is 145308131. The reversal of 145308089 is 980803541.

145308089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 980803541 = 19 ⋅51621239.

It is a cyclic number.

It is not a de Polignac number, because 145308089 - 2⁴ = 145308073 is a prime.

It is a super-2 number, since 2×145308089² = 42228881457663842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145308019) 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, 3158849 + ... + 3158894.

It is an arithmetic number, because the mean of its divisors is an integer number (37906464).

Almost surely, 2^145308089 is an apocalyptic number.

It is an amenable number.

145308089 is a deficient number, since it is larger than the sum of its proper divisors (6317767).

145308089 is an equidigital number, since it uses as much as digits as its factorization.

145308089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317766.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 145308089 is about 12054.3804900957. The cubic root of 145308089 is about 525.7306096930.

The spelling of 145308089 in words is "one hundred forty-five million, three hundred eight thousand, eighty-nine".