144532609 has 4 divisors (see below), whose sum is σ = 155650516. Its totient is φ = 133414704.

The previous prime is 144532579. The next prime is 144532613. The reversal of 144532609 is 906235441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 97911025 = 6828^2 + 9895^2 .

It is a cyclic number.

It is not a de Polignac number, because 144532609 - 2²⁷ = 10314881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144532699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558934 + ... + 5558959.

It is an arithmetic number, because the mean of its divisors is an integer number (38912629).

Almost surely, 2^144532609 is an apocalyptic number.

It is an amenable number.

144532609 is a deficient number, since it is larger than the sum of its proper divisors (11117907).

144532609 is a wasteful number, since it uses less digits than its factorization.

144532609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11117906.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 144532609 is about 12022.1715592484. The cubic root of 144532609 is about 524.7937015610.

The spelling of 144532609 in words is "one hundred forty-four million, five hundred thirty-two thousand, six hundred nine".