144545513 has 4 divisors (see below), whose sum is σ = 165194880. Its totient is φ = 123896148.

The previous prime is 144545491. The next prime is 144545537. The reversal of 144545513 is 315545441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315545441 = 23 ⋅13719367.

It is a cyclic number.

It is not a de Polignac number, because 144545513 - 2¹⁴ = 144529129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144545513.

It is not an unprimeable number, because it can be changed into a prime (144545573) 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, 10324673 + ... + 10324686.

It is an arithmetic number, because the mean of its divisors is an integer number (41298720).

Almost surely, 2^144545513 is an apocalyptic number.

It is an amenable number.

144545513 is a deficient number, since it is larger than the sum of its proper divisors (20649367).

144545513 is an equidigital number, since it uses as much as digits as its factorization.

144545513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20649366.

The product of its digits is 24000, while the sum is 32.

The square root of 144545513 is about 12022.7082223599. The cubic root of 144545513 is about 524.8093191126.

The spelling of 144545513 in words is "one hundred forty-four million, five hundred forty-five thousand, five hundred thirteen".