2557380841 has 2 divisors, whose sum is σ = 2557380842. Its totient is φ = 2557380840.

The previous prime is 2557380827. The next prime is 2557380851. The reversal of 2557380841 is 1480837552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1348358400 + 1209022441 = 36720^2 + 34771^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557380841 - 2²³ = 2548992233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557380851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278690420 + 1278690421.

It is an arithmetic number, because the mean of its divisors is an integer number (1278690421).

Almost surely, 2^2557380841 is an apocalyptic number.

It is an amenable number.

2557380841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557380841 is an equidigital number, since it uses as much as digits as its factorization.

2557380841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 2557380841 is about 50570.5531015827. The cubic root of 2557380841 is about 1367.5140670124.

The spelling of 2557380841 in words is "two billion, five hundred fifty-seven million, three hundred eighty thousand, eight hundred forty-one".