345155 has 4 divisors (see below), whose sum is σ = 414192. Its totient is φ = 276120.

The previous prime is 345143. The next prime is 345181. The reversal of 345155 is 551543.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 345155 - 2⁴ = 345139 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 345155.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34511 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (103548).

2³⁴⁵¹⁵⁵ is an apocalyptic number.

345155 is a deficient number, since it is larger than the sum of its proper divisors (69037).

345155 is an equidigital number, since it uses as much as digits as its factorization.

345155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69036.

The product of its digits is 1500, while the sum is 23.

The square root of 345155 is about 587.4989361692. The cubic root of 345155 is about 70.1462926900.

Adding to 345155 its reverse (551543), we get a palindrome (896698).

The spelling of 345155 in words is "three hundred forty-five thousand, one hundred fifty-five".