516401603 has 2 divisors, whose sum is σ = 516401604. Its totient is φ = 516401602.

The previous prime is 516401573. The next prime is 516401647. The reversal of 516401603 is 306104615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516401603 - 2¹⁰ = 516400579 is a prime.

It is not a weakly prime, because it can be changed into another prime (516401693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258200801 + 258200802.

It is an arithmetic number, because the mean of its divisors is an integer number (258200802).

Almost surely, 2^516401603 is an apocalyptic number.

516401603 is a deficient number, since it is larger than the sum of its proper divisors (1).

516401603 is an equidigital number, since it uses as much as digits as its factorization.

516401603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 516401603 is about 22724.4714569998. The cubic root of 516401603 is about 802.2859633055.

The spelling of 516401603 in words is "five hundred sixteen million, four hundred one thousand, six hundred three".