144415745 has 4 divisors (see below), whose sum is σ = 173298900. Its totient is φ = 115532592.

The previous prime is 144415741. The next prime is 144415769. The reversal of 144415745 is 547514441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547514441 = 71 ⋅7711471.

It can be written as a sum of positive squares in 2 ways, for example, as 60949249 + 83466496 = 7807^2 + 9136^2 .

It is a cyclic number.

It is not a de Polignac number, because 144415745 - 2² = 144415741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144415741) 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, 14441570 + ... + 14441579.

It is an arithmetic number, because the mean of its divisors is an integer number (43324725).

Almost surely, 2^144415745 is an apocalyptic number.

It is an amenable number.

144415745 is a deficient number, since it is larger than the sum of its proper divisors (28883155).

144415745 is an equidigital number, since it uses as much as digits as its factorization.

144415745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28883154.

The product of its digits is 44800, while the sum is 35.

The square root of 144415745 is about 12017.3102231739. The cubic root of 144415745 is about 524.6522201597.

The spelling of 144415745 in words is "one hundred forty-four million, four hundred fifteen thousand, seven hundred forty-five".