144264565 has 4 divisors (see below), whose sum is σ = 173117484. Its totient is φ = 115411648.

The previous prime is 144264559. The next prime is 144264577. The reversal of 144264565 is 565462441.

144264565 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 78605956 + 65658609 = 8866^2 + 8103^2 .

It is a cyclic number.

It is not a de Polignac number, because 144264565 - 2⁹ = 144264053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14426452 + ... + 14426461.

It is an arithmetic number, because the mean of its divisors is an integer number (43279371).

Almost surely, 2^144264565 is an apocalyptic number.

It is an amenable number.

144264565 is a deficient number, since it is larger than the sum of its proper divisors (28852919).

144264565 is an equidigital number, since it uses as much as digits as its factorization.

144264565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28852918.

The product of its digits is 115200, while the sum is 37.

The square root of 144264565 is about 12011.0184830430. The cubic root of 144264565 is about 524.4690808118.

The spelling of 144264565 in words is "one hundred forty-four million, two hundred sixty-four thousand, five hundred sixty-five".