144997 has 4 divisors (see below), whose sum is σ = 147436. Its totient is φ = 142560.

The previous prime is 144983. The next prime is 145007. The reversal of 144997 is 799441.

144997 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 25281 + 119716 = 159^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 144997 - 2¹¹ = 142949 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 (144917) 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, 1128 + ... + 1249.

It is an arithmetic number, because the mean of its divisors is an integer number (36859).

2¹⁴⁴⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

144997 is a deficient number, since it is larger than the sum of its proper divisors (2439).

144997 is an equidigital number, since it uses as much as digits as its factorization.

144997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438.

The product of its digits is 9072, while the sum is 34.

The square root of 144997 is about 380.7847160798. The cubic root of 144997 is about 52.5355164060.

The spelling of 144997 in words is "one hundred forty-four thousand, nine hundred ninety-seven".