144224555 has 8 divisors (see below), whose sum is σ = 178652544. Its totient is φ = 111657600.

The previous prime is 144224543. The next prime is 144224579. The reversal of 144224555 is 555422441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144224555 - 2⁶ = 144224491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465086 + ... + 465395.

It is an arithmetic number, because the mean of its divisors is an integer number (22331568).

Almost surely, 2^144224555 is an apocalyptic number.

144224555 is a deficient number, since it is larger than the sum of its proper divisors (34427989).

144224555 is an equidigital number, since it uses as much as digits as its factorization.

144224555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930517.

The product of its digits is 32000, while the sum is 32.

The square root of 144224555 is about 12009.3528135366. The cubic root of 144224555 is about 524.4205913159.

Adding to 144224555 its reverse (555422441), we get a palindrome (699646996).

The spelling of 144224555 in words is "one hundred forty-four million, two hundred twenty-four thousand, five hundred fifty-five".