144144587 has 4 divisors (see below), whose sum is σ = 149115120. Its totient is φ = 139174056.

The previous prime is 144144571. The next prime is 144144589. The reversal of 144144587 is 785441441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785441441 = 4339 ⋅181019.

It is a cyclic number.

It is not a de Polignac number, because 144144587 - 2⁴ = 144144571 is a prime.

It is a super-2 number, since 2×144144587² = 41555323922801138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144144587.

It is not an unprimeable number, because it can be changed into a prime (144144589) 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, 2485223 + ... + 2485280.

It is an arithmetic number, because the mean of its divisors is an integer number (37278780).

Almost surely, 2^144144587 is an apocalyptic number.

144144587 is a deficient number, since it is larger than the sum of its proper divisors (4970533).

144144587 is an equidigital number, since it uses as much as digits as its factorization.

144144587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970532.

The product of its digits is 71680, while the sum is 38.

The square root of 144144587 is about 12006.0229468380. The cubic root of 144144587 is about 524.3236484637.

The spelling of 144144587 in words is "one hundred forty-four million, one hundred forty-four thousand, five hundred eighty-seven".