775126493 has 2 divisors, whose sum is σ = 775126494. Its totient is φ = 775126492.

The previous prime is 775126477. The next prime is 775126549. The reversal of 775126493 is 394621577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 771839524 + 3286969 = 27782^2 + 1813^2 .

It is a cyclic number.

It is not a de Polignac number, because 775126493 - 2⁴ = 775126477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (775126453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387563246 + 387563247.

It is an arithmetic number, because the mean of its divisors is an integer number (387563247).

Almost surely, 2^775126493 is an apocalyptic number.

It is an amenable number.

775126493 is a deficient number, since it is larger than the sum of its proper divisors (1).

775126493 is an equidigital number, since it uses as much as digits as its factorization.

775126493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 775126493 is about 27841.0936028023. The cubic root of 775126493 is about 918.5952462874.

The spelling of 775126493 in words is "seven hundred seventy-five million, one hundred twenty-six thousand, four hundred ninety-three".