345017 has 2 divisors, whose sum is σ = 345018. Its totient is φ = 345016.

The previous prime is 345011. The next prime is 345019. The reversal of 345017 is 710543.

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., 212521 + 132496 = 461^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 345017 - 2⁴ = 345001 is a prime.

Together with 345019, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345017.

It is not a weakly prime, because it can be changed into another prime (345011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172508 + 172509.

It is an arithmetic number, because the mean of its divisors is an integer number (172509).

2³⁴⁵⁰¹⁷ is an apocalyptic number.

It is an amenable number.

345017 is a deficient number, since it is larger than the sum of its proper divisors (1).

345017 is an equidigital number, since it uses as much as digits as its factorization.

345017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 345017 is about 587.3814774063. The cubic root of 345017 is about 70.1369428049.

The spelling of 345017 in words is "three hundred forty-five thousand, seventeen".