2251444451 has 2 divisors, whose sum is σ = 2251444452. Its totient is φ = 2251444450.

The previous prime is 2251444441. The next prime is 2251444477. The reversal of 2251444451 is 1544441522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251444451 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2251444441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125722225 + 1125722226.

It is an arithmetic number, because the mean of its divisors is an integer number (1125722226).

Almost surely, 2^2251444451 is an apocalyptic number.

2251444451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251444451 is an equidigital number, since it uses as much as digits as its factorization.

2251444451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 32.

The square root of 2251444451 is about 47449.3883100720. The cubic root of 2251444451 is about 1310.6510469370.

Adding to 2251444451 its reverse (1544441522), we get a palindrome (3795885973).

The spelling of 2251444451 in words is "two billion, two hundred fifty-one million, four hundred forty-four thousand, four hundred fifty-one".