355109 has 2 divisors, whose sum is σ = 355110. Its totient is φ = 355108.

The previous prime is 355099. The next prime is 355111. The reversal of 355109 is 901553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334084 + 21025 = 578^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 355109 - 2⁴ = 355093 is a prime.

It is a super-2 number, since 2×355109² = 252204803762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 355111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177554 + 177555.

It is an arithmetic number, because the mean of its divisors is an integer number (177555).

2³⁵⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

355109 is a deficient number, since it is larger than the sum of its proper divisors (1).

355109 is an equidigital number, since it uses as much as digits as its factorization.

355109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 355109 is about 595.9102281384. The cubic root of 355109 is about 70.8142336816.

It can be divided in two parts, 355 and 109, that added together give a palindrome (464).

The spelling of 355109 in words is "three hundred fifty-five thousand, one hundred nine".