144045445 has 4 divisors (see below), whose sum is σ = 172854540. Its totient is φ = 115236352.

The previous prime is 144045431. The next prime is 144045449. The reversal of 144045445 is 544540441.

144045445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24930049 + 119115396 = 4993^2 + 10914^2 .

It is a cyclic number.

It is not a de Polignac number, because 144045445 - 2⁵ = 144045413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144045449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14404540 + ... + 14404549.

It is an arithmetic number, because the mean of its divisors is an integer number (43213635).

Almost surely, 2^144045445 is an apocalyptic number.

It is an amenable number.

144045445 is a deficient number, since it is larger than the sum of its proper divisors (28809095).

144045445 is an equidigital number, since it uses as much as digits as its factorization.

144045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28809094.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 144045445 is about 12001.8933922944. The cubic root of 144045445 is about 524.2034117427.

Adding to 144045445 its reverse (544540441), we get a palindrome (688585886).

The spelling of 144045445 in words is "one hundred forty-four million, forty-five thousand, four hundred forty-five".