144443501 has 2 divisors, whose sum is σ = 144443502. Its totient is φ = 144443500.

The previous prime is 144443443. The next prime is 144443503. The reversal of 144443501 is 105344441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144240100 + 203401 = 12010^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 144443501 - 2¹⁴ = 144427117 is a prime.

It is a super-2 number, since 2×144443501² = 41727849962274002, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 144443503, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144443503) 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 as a sum of consecutive naturals, namely, 72221750 + 72221751.

It is an arithmetic number, because the mean of its divisors is an integer number (72221751).

Almost surely, 2^144443501 is an apocalyptic number.

It is an amenable number.

144443501 is a deficient number, since it is larger than the sum of its proper divisors (1).

144443501 is an equidigital number, since it uses as much as digits as its factorization.

144443501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 144443501 is about 12018.4650018212. The cubic root of 144443501 is about 524.6858298703.

Adding to 144443501 its reverse (105344441), we get a palindrome (249787942).

The spelling of 144443501 in words is "one hundred forty-four million, four hundred forty-three thousand, five hundred one".