2557944373 has 2 divisors, whose sum is σ = 2557944374. Its totient is φ = 2557944372.

The previous prime is 2557944329. The next prime is 2557944377. The reversal of 2557944373 is 3734497552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2122721329 + 435223044 = 46073^2 + 20862^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557944373 - 2¹⁷ = 2557813301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557944377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278972186 + 1278972187.

It is an arithmetic number, because the mean of its divisors is an integer number (1278972187).

Almost surely, 2^2557944373 is an apocalyptic number.

It is an amenable number.

2557944373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557944373 is an equidigital number, since it uses as much as digits as its factorization.

2557944373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 49.

The square root of 2557944373 is about 50576.1245351994. The cubic root of 2557944373 is about 1367.6145058842.

The spelling of 2557944373 in words is "two billion, five hundred fifty-seven million, nine hundred forty-four thousand, three hundred seventy-three".