144591 has 4 divisors (see below), whose sum is σ = 192792. Its totient is φ = 96392.

The previous prime is 144589. The next prime is 144593. The reversal of 144591 is 195441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195441 = 3 ⋅65147.

It is an interprime number because it is at equal distance from previous prime (144589) and next prime (144593).

It is a cyclic number.

It is not a de Polignac number, because 144591 - 2¹ = 144589 is a prime.

It is a D-number.

144591 is a lucky number.

It is a plaindrome in base 16.

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 144591.

It is not an unprimeable number, because it can be changed into a prime (144593) 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, 24096 + ... + 24101.

It is an arithmetic number, because the mean of its divisors is an integer number (48198).

2¹⁴⁴⁵⁹¹ is an apocalyptic number.

144591 is a deficient number, since it is larger than the sum of its proper divisors (48201).

144591 is an equidigital number, since it uses as much as digits as its factorization.

144591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48200.

The product of its digits is 720, while the sum is 24.

The square root of 144591 is about 380.2512327396. The cubic root of 144591 is about 52.4864364054.

The spelling of 144591 in words is "one hundred forty-four thousand, five hundred ninety-one".