144245515 has 8 divisors (see below), whose sum is σ = 173262960. Its totient is φ = 115284192.

The previous prime is 144245513. The next prime is 144245531. The reversal of 144245515 is 515542441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144245515 - 2¹ = 144245513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144245513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8149 + ... + 18838.

It is an arithmetic number, because the mean of its divisors is an integer number (21657870).

Almost surely, 2^144245515 is an apocalyptic number.

144245515 is a deficient number, since it is larger than the sum of its proper divisors (29017445).

144245515 is a wasteful number, since it uses less digits than its factorization.

144245515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28061.

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

The square root of 144245515 is about 12010.2254350199. The cubic root of 144245515 is about 524.4459945794.

Adding to 144245515 its reverse (515542441), we get a palindrome (659787956).

The spelling of 144245515 in words is "one hundred forty-four million, two hundred forty-five thousand, five hundred fifteen".