144428173 has 2 divisors, whose sum is σ = 144428174. Its totient is φ = 144428172.

The previous prime is 144428143. The next prime is 144428231. The reversal of 144428173 is 371824441.

It is a happy number.

144428173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116359369 + 28068804 = 10787^2 + 5298^2 .

It is an emirp because it is prime and its reverse (371824441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144428173 is a prime.

It is a super-2 number, since 2×144428173² = 41718994312235858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144428143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72214086 + 72214087.

It is an arithmetic number, because the mean of its divisors is an integer number (72214087).

Almost surely, 2^144428173 is an apocalyptic number.

It is an amenable number.

144428173 is a deficient number, since it is larger than the sum of its proper divisors (1).

144428173 is an equidigital number, since it uses as much as digits as its factorization.

144428173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 144428173 is about 12017.8272994747. The cubic root of 144428173 is about 524.6672697439.

The spelling of 144428173 in words is "one hundred forty-four million, four hundred twenty-eight thousand, one hundred seventy-three".