2557451513 has 2 divisors, whose sum is σ = 2557451514. Its totient is φ = 2557451512.

The previous prime is 2557451459. The next prime is 2557451537. The reversal of 2557451513 is 3151547552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2114896144 + 442555369 = 45988^2 + 21037^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557451513 - 2⁸ = 2557451257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557451543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278725756 + 1278725757.

It is an arithmetic number, because the mean of its divisors is an integer number (1278725757).

Almost surely, 2^2557451513 is an apocalyptic number.

It is an amenable number.

2557451513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557451513 is an equidigital number, since it uses as much as digits as its factorization.

2557451513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105000, while the sum is 38.

The square root of 2557451513 is about 50571.2518433151. The cubic root of 2557451513 is about 1367.5266637627.

The spelling of 2557451513 in words is "two billion, five hundred fifty-seven million, four hundred fifty-one thousand, five hundred thirteen".