543121345 has 8 divisors (see below), whose sum is σ = 701879976. Its totient is φ = 401074176.

The previous prime is 543121303. The next prime is 543121351.

543121345 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 27468081 + 515653264 = 5241^2 + 22708^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543121345 is a prime.

It is a Duffinian 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, 4177792 + ... + 4177921.

It is an arithmetic number, because the mean of its divisors is an integer number (87734997).

Almost surely, 2^543121345 is an apocalyptic number.

It is an amenable number.

543121345 is a deficient number, since it is larger than the sum of its proper divisors (158758631).

543121345 is a wasteful number, since it uses less digits than its factorization.

543121345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355731.

The product of its digits is 7200, while the sum is 28.

The square root of 543121345 is about 23304.9639562047. The cubic root of 543121345 is about 815.8912778262.

The spelling of 543121345 in words is "five hundred forty-three million, one hundred twenty-one thousand, three hundred forty-five".