345445 has 8 divisors (see below), whose sum is σ = 421920. Its totient is φ = 271440.

The previous prime is 345431. The next prime is 345451. The reversal of 345445 is 544543.

345445 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345445 - 2⁵ = 345413 is a prime.

It is a d-powerful number, because it can be written as 3 + 4⁵ + 4⁵ + 5⁵ + 4⁹ + 5⁷ .

345445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291 + ... + 880.

It is an arithmetic number, because the mean of its divisors is an integer number (52740).

2³⁴⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

345445 is a deficient number, since it is larger than the sum of its proper divisors (76475).

345445 is a wasteful number, since it uses less digits than its factorization.

345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235.

The product of its digits is 4800, while the sum is 25.

The square root of 345445 is about 587.7456933062. The cubic root of 345445 is about 70.1659328809.

Adding to 345445 its reverse (544543), we get a palindrome (889988).

The spelling of 345445 in words is "three hundred forty-five thousand, four hundred forty-five".