5257786493 has 2 divisors, whose sum is σ = 5257786494. Its totient is φ = 5257786492.

The previous prime is 5257786463. The next prime is 5257786531. The reversal of 5257786493 is 3946877525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4123309369 + 1134477124 = 64213^2 + 33682^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257786493 - 2¹⁶ = 5257720957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5257786423) 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, 2628893246 + 2628893247.

It is an arithmetic number, because the mean of its divisors is an integer number (2628893247).

Almost surely, 2^5257786493 is an apocalyptic number.

It is an amenable number.

5257786493 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257786493 is an equidigital number, since it uses as much as digits as its factorization.

5257786493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12700800, while the sum is 56.

The square root of 5257786493 is about 72510.5957291760. The cubic root of 5257786493 is about 1738.8721379106.

The spelling of 5257786493 in words is "five billion, two hundred fifty-seven million, seven hundred eighty-six thousand, four hundred ninety-three".