144165 has 16 divisors (see below), whose sum is σ = 263808. Its totient is φ = 65856.

The previous prime is 144163. The next prime is 144167. The reversal of 144165 is 561441.

It is an interprime number because it is at equal distance from previous prime (144163) and next prime (144167).

It is not a de Polignac number, because 144165 - 2¹ = 144163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582 + ... + 791.

It is an arithmetic number, because the mean of its divisors is an integer number (16488).

2¹⁴⁴¹⁶⁵ is an apocalyptic number.

144165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144165 is a deficient number, since it is larger than the sum of its proper divisors (119643).

144165 is a wasteful number, since it uses less digits than its factorization.

144165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388.

The product of its digits is 480, while the sum is 21.

The square root of 144165 is about 379.6906635671. The cubic root of 144165 is about 52.4348397950.

The spelling of 144165 in words is "one hundred forty-four thousand, one hundred sixty-five".