144235565 has 12 divisors (see below), whose sum is σ = 183864756. Its totient is φ = 108599808.

The previous prime is 144235561. The next prime is 144235601. The reversal of 144235565 is 565532441.

It can be written as a sum of positive squares in 6 ways, for example, as 13293316 + 130942249 = 3646^2 + 11443^2 .

It is not a de Polignac number, because 144235565 - 2² = 144235561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144235561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48464 + ... + 51353.

It is an arithmetic number, because the mean of its divisors is an integer number (15322063).

Almost surely, 2^144235565 is an apocalyptic number.

It is an amenable number.

144235565 is a deficient number, since it is larger than the sum of its proper divisors (39629191).

144235565 is an equidigital number, since it uses as much as digits as its factorization.

144235565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99856 (or 99839 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 144235565 is about 12009.8111975168. The cubic root of 144235565 is about 524.4339356080.

The spelling of 144235565 in words is "one hundred forty-four million, two hundred thirty-five thousand, five hundred sixty-five".