144565 has 8 divisors (see below), whose sum is σ = 179640. Its totient is φ = 111552.

The previous prime is 144563. The next prime is 144569. The reversal of 144565 is 565441.

144565 = T₈₅ + T₈₆ + ... + T₁₁₃.

144565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 106929 = 194^2 + 327^2 .

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 144565 - 2¹ = 144563 is a prime.

144565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144563) 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, 354 + ... + 643.

It is an arithmetic number, because the mean of its divisors is an integer number (22455).

2¹⁴⁴⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

144565 is a deficient number, since it is larger than the sum of its proper divisors (35075).

144565 is an equidigital number, since it uses as much as digits as its factorization.

144565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 2400, while the sum is 25.

The square root of 144565 is about 380.2170432792. The cubic root of 144565 is about 52.4832902226.

The spelling of 144565 in words is "one hundred forty-four thousand, five hundred sixty-five".