2557798543 has 2 divisors, whose sum is σ = 2557798544. Its totient is φ = 2557798542.

The previous prime is 2557798531. The next prime is 2557798547. The reversal of 2557798543 is 3458977552.

2557798543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2557798543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557798547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278899271 + 1278899272.

It is an arithmetic number, because the mean of its divisors is an integer number (1278899272).

Almost surely, 2^2557798543 is an apocalyptic number.

2557798543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557798543 is an equidigital number, since it uses as much as digits as its factorization.

2557798543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584000, while the sum is 55.

The square root of 2557798543 is about 50574.6828264894. The cubic root of 2557798543 is about 1367.5885158724.

The spelling of 2557798543 in words is "two billion, five hundred fifty-seven million, seven hundred ninety-eight thousand, five hundred forty-three".