144555923 has 4 divisors (see below), whose sum is σ = 149540640. Its totient is φ = 139571208.

The previous prime is 144555919. The next prime is 144555941. The reversal of 144555923 is 329555441.

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 144555923 - 2² = 144555919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144555223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2492315 + ... + 2492372.

It is an arithmetic number, because the mean of its divisors is an integer number (37385160).

Almost surely, 2^144555923 is an apocalyptic number.

144555923 is a deficient number, since it is larger than the sum of its proper divisors (4984717).

144555923 is an equidigital number, since it uses as much as digits as its factorization.

144555923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984716.

The product of its digits is 108000, while the sum is 38.

The square root of 144555923 is about 12023.1411453081. The cubic root of 144555923 is about 524.8219175294.

The spelling of 144555923 in words is "one hundred forty-four million, five hundred fifty-five thousand, nine hundred twenty-three".