145235089 has 2 divisors, whose sum is σ = 145235090. Its totient is φ = 145235088.

The previous prime is 145235081. The next prime is 145235117. The reversal of 145235089 is 980532541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 24059025 = 11008^2 + 4905^2 .

It is an emirp because it is prime and its reverse (980532541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145235089 - 2³ = 145235081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145235081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72617544 + 72617545.

It is an arithmetic number, because the mean of its divisors is an integer number (72617545).

Almost surely, 2^145235089 is an apocalyptic number.

It is an amenable number.

145235089 is a deficient number, since it is larger than the sum of its proper divisors (1).

145235089 is an equidigital number, since it uses as much as digits as its factorization.

145235089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 145235089 is about 12051.3521647988. The cubic root of 145235089 is about 525.6425559506.

The spelling of 145235089 in words is "one hundred forty-five million, two hundred thirty-five thousand, eighty-nine".