345461 has 2 divisors, whose sum is σ = 345462. Its totient is φ = 345460.

The previous prime is 345451. The next prime is 345463. The reversal of 345461 is 164543.

It is a happy number.

345461 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180625 + 164836 = 425^2 + 406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345461 is a prime.

Together with 345463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345463) 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, 172730 + 172731.

It is an arithmetic number, because the mean of its divisors is an integer number (172731).

2³⁴⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

345461 is a deficient number, since it is larger than the sum of its proper divisors (1).

345461 is an equidigital number, since it uses as much as digits as its factorization.

345461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 345461 is about 587.7593044776. The cubic root of 345461 is about 70.1670161577.

The spelling of 345461 in words is "three hundred forty-five thousand, four hundred sixty-one".