523305617 has 2 divisors, whose sum is σ = 523305618. Its totient is φ = 523305616.

The previous prime is 523305593. The next prime is 523305631. The reversal of 523305617 is 716503325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386672896 + 136632721 = 19664^2 + 11689^2 .

It is a cyclic number.

It is not a de Polignac number, because 523305617 - 2⁶ = 523305553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523305697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261652808 + 261652809.

It is an arithmetic number, because the mean of its divisors is an integer number (261652809).

Almost surely, 2^523305617 is an apocalyptic number.

It is an amenable number.

523305617 is a deficient number, since it is larger than the sum of its proper divisors (1).

523305617 is an equidigital number, since it uses as much as digits as its factorization.

523305617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 523305617 is about 22875.8741253750. The cubic root of 523305617 is about 805.8455254452.

The spelling of 523305617 in words is "five hundred twenty-three million, three hundred five thousand, six hundred seventeen".