516204643 has 4 divisors (see below), whose sum is σ = 546569640. Its totient is φ = 485839648.

The previous prime is 516204613. The next prime is 516204659. The reversal of 516204643 is 346402615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516204643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516204613) 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, 15182473 + ... + 15182506.

It is an arithmetic number, because the mean of its divisors is an integer number (136642410).

Almost surely, 2^516204643 is an apocalyptic number.

516204643 is a deficient number, since it is larger than the sum of its proper divisors (30364997).

516204643 is a wasteful number, since it uses less digits than its factorization.

516204643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30364996.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 516204643 is about 22720.1373895494. The cubic root of 516204643 is about 802.1839507527.

The spelling of 516204643 in words is "five hundred sixteen million, two hundred four thousand, six hundred forty-three".