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144365 = 5132221

144365 has 8 divisors (see below), whose sum is σ = 186648. Its totient is φ = 106560.

The previous prime is 144349. The next prime is 144379. The reversal of 144365 is 563441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 137641 = 82^2 + 371^2 .

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

It is not a de Polignac number, because 144365 - 24 = 144349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 144365.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144365.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 1175.

It is an arithmetic number, because the mean of its divisors is an integer number (23331).

2144365 is an apocalyptic number.

It is an amenable number.

144365 is a deficient number, since it is larger than the sum of its proper divisors (42283).

144365 is a wasteful number, since it uses less digits than its factorization.

144365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239.

The product of its digits is 1440, while the sum is 23.

The square root of 144365 is about 379.9539445775. The cubic root of 144365 is about 52.4590761958.

It can be divided in two parts, 14436 and 5, that added together give a palindrome (14441).

The spelling of 144365 in words is "one hundred forty-four thousand, three hundred sixty-five".

Divisors: 1 5 13 65 2221 11105 28873 144365