516205387 has 2 divisors, whose sum is σ = 516205388. Its totient is φ = 516205386.

The previous prime is 516205379. The next prime is 516205421. The reversal of 516205387 is 783502615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516205387 - 2³ = 516205379 is a prime.

It is not a weakly prime, because it can be changed into another prime (516205687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258102693 + 258102694.

It is an arithmetic number, because the mean of its divisors is an integer number (258102694).

Almost surely, 2^516205387 is an apocalyptic number.

516205387 is a deficient number, since it is larger than the sum of its proper divisors (1).

516205387 is an equidigital number, since it uses as much as digits as its factorization.

516205387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 516205387 is about 22720.1537626839. The cubic root of 516205387 is about 802.1843361455.

The spelling of 516205387 in words is "five hundred sixteen million, two hundred five thousand, three hundred eighty-seven".