144545215 has 4 divisors (see below), whose sum is σ = 173454264. Its totient is φ = 115636168.

The previous prime is 144545209. The next prime is 144545239. The reversal of 144545215 is 512545441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512545441 = 1777 ⋅288433.

It is a cyclic number.

It is not a de Polignac number, because 144545215 - 2⁹ = 144544703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14454517 + ... + 14454526.

It is an arithmetic number, because the mean of its divisors is an integer number (43363566).

Almost surely, 2^144545215 is an apocalyptic number.

144545215 is a deficient number, since it is larger than the sum of its proper divisors (28909049).

144545215 is an equidigital number, since it uses as much as digits as its factorization.

144545215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28909048.

The product of its digits is 16000, while the sum is 31.

The square root of 144545215 is about 12022.6958291392. The cubic root of 144545215 is about 524.8089584573.

The spelling of 144545215 in words is "one hundred forty-four million, five hundred forty-five thousand, two hundred fifteen".