144220551 has 8 divisors (see below), whose sum is σ = 194611200. Its totient is φ = 94988472.

The previous prime is 144220547. The next prime is 144220613. The reversal of 144220551 is 155022441.

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

It is not a de Polignac number, because 144220551 - 2² = 144220547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289351 + ... + 289848.

It is an arithmetic number, because the mean of its divisors is an integer number (24326400).

Almost surely, 2^144220551 is an apocalyptic number.

144220551 is a deficient number, since it is larger than the sum of its proper divisors (50390649).

144220551 is an equidigital number, since it uses as much as digits as its factorization.

144220551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579285.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 144220551 is about 12009.1861089751. The cubic root of 144220551 is about 524.4157382369.

Adding to 144220551 its reverse (155022441), we get a palindrome (299242992).

The spelling of 144220551 in words is "one hundred forty-four million, two hundred twenty thousand, five hundred fifty-one".