523775257 has 2 divisors, whose sum is σ = 523775258. Its totient is φ = 523775256.

The previous prime is 523775243. The next prime is 523775327. The reversal of 523775257 is 752577325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477684736 + 46090521 = 21856^2 + 6789^2 .

It is a cyclic number.

It is not a de Polignac number, because 523775257 - 2²³ = 515386649 is a prime.

It is not a weakly prime, because it can be changed into another prime (523775207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261887628 + 261887629.

It is an arithmetic number, because the mean of its divisors is an integer number (261887629).

Almost surely, 2^523775257 is an apocalyptic number.

It is an amenable number.

523775257 is a deficient number, since it is larger than the sum of its proper divisors (1).

523775257 is an equidigital number, since it uses as much as digits as its factorization.

523775257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 514500, while the sum is 43.

The square root of 523775257 is about 22886.1367862730. The cubic root of 523775257 is about 806.0865217333.

The spelling of 523775257 in words is "five hundred twenty-three million, seven hundred seventy-five thousand, two hundred fifty-seven".