2557440001 has 2 divisors, whose sum is σ = 2557440002. Its totient is φ = 2557440000.

The previous prime is 2557439977. The next prime is 2557440031. The reversal of 2557440001 is 1000447552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1755191025 + 802248976 = 41895^2 + 28324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2557440001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557440031) 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, 1278720000 + 1278720001.

It is an arithmetic number, because the mean of its divisors is an integer number (1278720001).

Almost surely, 2^2557440001 is an apocalyptic number.

It is an amenable number.

2557440001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557440001 is an equidigital number, since it uses as much as digits as its factorization.

2557440001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2557440001 is about 50571.1380235802. The cubic root of 2557440001 is about 1367.5246118515.

Adding to 2557440001 its reverse (1000447552), we get a palindrome (3557887553).

The spelling of 2557440001 in words is "two billion, five hundred fifty-seven million, four hundred forty thousand, one".