144880591 has 4 divisors (see below), whose sum is σ = 144917784. Its totient is φ = 144843400.

The previous prime is 144880573. The next prime is 144880601. The reversal of 144880591 is 195088441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144880591 - 2⁵ = 144880559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144880991) 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, 11965 + ... + 20806.

It is an arithmetic number, because the mean of its divisors is an integer number (36229446).

Almost surely, 2^144880591 is an apocalyptic number.

144880591 is a deficient number, since it is larger than the sum of its proper divisors (37193).

144880591 is an equidigital number, since it uses as much as digits as its factorization.

144880591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37192.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 144880591 is about 12036.6353687399. The cubic root of 144880591 is about 525.2145348456.

The spelling of 144880591 in words is "one hundred forty-four million, eight hundred eighty thousand, five hundred ninety-one".