345049 has 4 divisors (see below), whose sum is σ = 365364. Its totient is φ = 324736.

The previous prime is 345047. The next prime is 345067. The reversal of 345049 is 940543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 126025 = 468^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 345049 - 2¹ = 345047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10132 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (91341).

2³⁴⁵⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

345049 is a deficient number, since it is larger than the sum of its proper divisors (20315).

345049 is a wasteful number, since it uses less digits than its factorization.

345049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20314.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 345049 is about 587.4087163126. The cubic root of 345049 is about 70.1391111162.

The spelling of 345049 in words is "three hundred forty-five thousand, forty-nine".