144531385 has 16 divisors (see below), whose sum is σ = 186816960. Its totient is φ = 106989120.

The previous prime is 144531377. The next prime is 144531391. The reversal of 144531385 is 583135441.

It is not a de Polignac number, because 144531385 - 2³ = 144531377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144531385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13606 + ... + 21775.

It is an arithmetic number, because the mean of its divisors is an integer number (11676060).

Almost surely, 2^144531385 is an apocalyptic number.

It is an amenable number.

144531385 is a deficient number, since it is larger than the sum of its proper divisors (42285575).

144531385 is a wasteful number, since it uses less digits than its factorization.

144531385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35448.

The product of its digits is 28800, while the sum is 34.

The square root of 144531385 is about 12022.1206531959. The cubic root of 144531385 is about 524.7922201207.

The spelling of 144531385 in words is "one hundred forty-four million, five hundred thirty-one thousand, three hundred eighty-five".