516906563 has 2 divisors, whose sum is σ = 516906564. Its totient is φ = 516906562.

The previous prime is 516906553. The next prime is 516906589. The reversal of 516906563 is 365609615.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516906563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516906563.

It is not a weakly prime, because it can be changed into another prime (516906553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258453281 + 258453282.

It is an arithmetic number, because the mean of its divisors is an integer number (258453282).

Almost surely, 2^516906563 is an apocalyptic number.

516906563 is a deficient number, since it is larger than the sum of its proper divisors (1).

516906563 is an equidigital number, since it uses as much as digits as its factorization.

516906563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 516906563 is about 22735.5792316800. The cubic root of 516906563 is about 802.5473815122.

The spelling of 516906563 in words is "five hundred sixteen million, nine hundred six thousand, five hundred sixty-three".