2557074349 has 2 divisors, whose sum is σ = 2557074350. Its totient is φ = 2557074348.

The previous prime is 2557074343. The next prime is 2557074361. The reversal of 2557074349 is 9434707552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2544698025 + 12376324 = 50445^2 + 3518^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557074349 - 2¹⁵ = 2557041581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2557074299 and 2557074308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557074343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278537174 + 1278537175.

It is an arithmetic number, because the mean of its divisors is an integer number (1278537175).

Almost surely, 2^2557074349 is an apocalyptic number.

It is an amenable number.

2557074349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557074349 is an equidigital number, since it uses as much as digits as its factorization.

2557074349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The square root of 2557074349 is about 50567.5226701882. The cubic root of 2557074349 is about 1367.4594344420.

The spelling of 2557074349 in words is "two billion, five hundred fifty-seven million, seventy-four thousand, three hundred forty-nine".