523145017 has 2 divisors, whose sum is σ = 523145018. Its totient is φ = 523145016.

The previous prime is 523145003. The next prime is 523145023. The reversal of 523145017 is 710541325.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383219776 + 139925241 = 19576^2 + 11829^2 .

It is a cyclic number.

It is not a de Polignac number, because 523145017 - 2⁷ = 523144889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523145047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261572508 + 261572509.

It is an arithmetic number, because the mean of its divisors is an integer number (261572509).

Almost surely, 2^523145017 is an apocalyptic number.

It is an amenable number.

523145017 is a deficient number, since it is larger than the sum of its proper divisors (1).

523145017 is an equidigital number, since it uses as much as digits as its factorization.

523145017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 523145017 is about 22872.3636076379. The cubic root of 523145017 is about 805.7630802935.

The spelling of 523145017 in words is "five hundred twenty-three million, one hundred forty-five thousand, seventeen".