2251444322 has 4 divisors (see below), whose sum is σ = 3377166486. Its totient is φ = 1125722160.

The previous prime is 2251444313. The next prime is 2251444361. The reversal of 2251444322 is 2234441522.

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

It can be written as a sum of positive squares in only one way, i.e., 2185656001 + 65788321 = 46751^2 + 8111^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 562861079 + ... + 562861082.

Almost surely, 2^2251444322 is an apocalyptic number.

2251444322 is a deficient number, since it is larger than the sum of its proper divisors (1125722164).

2251444322 is a wasteful number, since it uses less digits than its factorization.

2251444322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125722163.

The product of its digits is 15360, while the sum is 29.

The square root of 2251444322 is about 47449.3869507289. The cubic root of 2251444322 is about 1310.6510219051.

Adding to 2251444322 its reverse (2234441522), we get a palindrome (4485885844).

The spelling of 2251444322 in words is "two billion, two hundred fifty-one million, four hundred forty-four thousand, three hundred twenty-two".