345505543 has 4 divisors (see below), whose sum is σ = 346531120. Its totient is φ = 344479968.

The previous prime is 345505541. The next prime is 345505579.

345505543 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 345505543 - 2¹ = 345505541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345505499 and 345505508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345505541) 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, 512283 + ... + 512956.

It is an arithmetic number, because the mean of its divisors is an integer number (86632780).

Almost surely, 2^345505543 is an apocalyptic number.

345505543 is a deficient number, since it is larger than the sum of its proper divisors (1025577).

345505543 is a wasteful number, since it uses less digits than its factorization.

345505543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025576.

The product of its (nonzero) digits is 90000, while the sum is 34.

The square root of 345505543 is about 18587.7793993796. The cubic root of 345505543 is about 701.7003175623.

Adding to 345505543 its product of nonzero digits (90000), we get a palindrome (345595543).

The spelling of 345505543 in words is "three hundred forty-five million, five hundred five thousand, five hundred forty-three".