516651671 has 4 divisors (see below), whose sum is σ = 516735600. Its totient is φ = 516567744.

The previous prime is 516651659. The next prime is 516651679. The reversal of 516651671 is 176156615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176156615 = 5 ⋅35231323.

It is a cyclic number.

It is not a de Polignac number, because 516651671 - 2¹⁸ = 516389527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516651679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31931 + ... + 45308.

It is an arithmetic number, because the mean of its divisors is an integer number (129183900).

Almost surely, 2^516651671 is an apocalyptic number.

516651671 is a deficient number, since it is larger than the sum of its proper divisors (83929).

516651671 is an equidigital number, since it uses as much as digits as its factorization.

516651671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83928.

The product of its digits is 37800, while the sum is 38.

The square root of 516651671 is about 22729.9729652281. The cubic root of 516651671 is about 802.4154450044.

The spelling of 516651671 in words is "five hundred sixteen million, six hundred fifty-one thousand, six hundred seventy-one".