2445044557 has 2 divisors, whose sum is σ = 2445044558. Its totient is φ = 2445044556.

The previous prime is 2445044551. The next prime is 2445044597. The reversal of 2445044557 is 7554405442.

It is a happy number.

It is an a-pointer prime, because the next prime (2445044597) can be obtained adding 2445044557 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2444906916 + 137641 = 49446^2 + 371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2445044557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2445044551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222522278 + 1222522279.

It is an arithmetic number, because the mean of its divisors is an integer number (1222522279).

Almost surely, 2^2445044557 is an apocalyptic number.

It is an amenable number.

2445044557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445044557 is an equidigital number, since it uses as much as digits as its factorization.

2445044557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 40.

The square root of 2445044557 is about 49447.3918119045. The cubic root of 2445044557 is about 1347.1902341668.

Adding to 2445044557 its reverse (7554405442), we get a palindrome (9999449999).

The spelling of 2445044557 in words is "two billion, four hundred forty-five million, forty-four thousand, five hundred fifty-seven".