2251444321 has 8 divisors (see below), whose sum is σ = 2573745920. Its totient is φ = 1929309408.

The previous prime is 2251444313. The next prime is 2251444361. The reversal of 2251444321 is 1234441522.

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

It is a cyclic number.

It is not a de Polignac number, because 2251444321 - 2³ = 2251444313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2251444321.

It is not an unprimeable number, because it can be changed into a prime (2251444361) 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, 11241 + ... + 68038.

It is an arithmetic number, because the mean of its divisors is an integer number (321718240).

Almost surely, 2^2251444321 is an apocalyptic number.

It is an amenable number.

2251444321 is a deficient number, since it is larger than the sum of its proper divisors (322301599).

2251444321 is an equidigital number, since it uses as much as digits as its factorization.

2251444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83343.

The product of its digits is 7680, while the sum is 28.

The square root of 2251444321 is about 47449.3869401913. The cubic root of 2251444321 is about 1310.6510217111.

Adding to 2251444321 its reverse (1234441522), we get a palindrome (3485885843).

The spelling of 2251444321 in words is "two billion, two hundred fifty-one million, four hundred forty-four thousand, three hundred twenty-one".