523305697 has 2 divisors, whose sum is σ = 523305698. Its totient is φ = 523305696.

The previous prime is 523305631. The next prime is 523305703. The reversal of 523305697 is 796503325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415996816 + 107308881 = 20396^2 + 10359^2 .

It is a cyclic number.

It is not a de Polignac number, because 523305697 - 2²⁷ = 389087969 is a prime.

It is not a weakly prime, because it can be changed into another prime (523305617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261652848 + 261652849.

It is an arithmetic number, because the mean of its divisors is an integer number (261652849).

Almost surely, 2^523305697 is an apocalyptic number.

It is an amenable number.

523305697 is a deficient number, since it is larger than the sum of its proper divisors (1).

523305697 is an equidigital number, since it uses as much as digits as its factorization.

523305697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 40.

The square root of 523305697 is about 22875.8758739420. The cubic root of 523305697 is about 805.8455665096.

The spelling of 523305697 in words is "five hundred twenty-three million, three hundred five thousand, six hundred ninety-seven".