145448609 has 2 divisors, whose sum is σ = 145448610. Its totient is φ = 145448608.

The previous prime is 145448603. The next prime is 145448623. The reversal of 145448609 is 906844541.

145448609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92929600 + 52519009 = 9640^2 + 7247^2 .

It is an emirp because it is prime and its reverse (906844541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145448609 - 2⁴ = 145448593 is a prime.

It is not a weakly prime, because it can be changed into another prime (145448603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72724304 + 72724305.

It is an arithmetic number, because the mean of its divisors is an integer number (72724305).

Almost surely, 2^145448609 is an apocalyptic number.

It is an amenable number.

145448609 is a deficient number, since it is larger than the sum of its proper divisors (1).

145448609 is an equidigital number, since it uses as much as digits as its factorization.

145448609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 145448609 is about 12060.2076681954. The cubic root of 145448609 is about 525.9000241300.

The spelling of 145448609 in words is "one hundred forty-five million, four hundred forty-eight thousand, six hundred nine".