345571 has 2 divisors, whose sum is σ = 345572. Its totient is φ = 345570.

The previous prime is 345551. The next prime is 345577. The reversal of 345571 is 175543.

It is a strong prime.

It is an emirp because it is prime and its reverse (175543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345571 - 2¹⁷ = 214499 is a prime.

It is not a weakly prime, because it can be changed into another prime (345577) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172785 + 172786.

It is an arithmetic number, because the mean of its divisors is an integer number (172786).

2³⁴⁵⁵⁷¹ is an apocalyptic number.

345571 is a deficient number, since it is larger than the sum of its proper divisors (1).

345571 is an equidigital number, since it uses as much as digits as its factorization.

345571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 25.

The square root of 345571 is about 587.8528727496. The cubic root of 345571 is about 70.1744627799.

The spelling of 345571 in words is "three hundred forty-five thousand, five hundred seventy-one".