516877891 has 8 divisors (see below), whose sum is σ = 523828800. Its totient is φ = 509967360.

The previous prime is 516877853. The next prime is 516877943. The reversal of 516877891 is 198778615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516877891 - 2¹⁵ = 516845123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516877841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16131 + ... + 35971.

It is an arithmetic number, because the mean of its divisors is an integer number (65478600).

Almost surely, 2^516877891 is an apocalyptic number.

516877891 is a deficient number, since it is larger than the sum of its proper divisors (6950909).

516877891 is a wasteful number, since it uses less digits than its factorization.

516877891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20189.

The product of its digits is 846720, while the sum is 52.

The square root of 516877891 is about 22734.9486693944. The cubic root of 516877891 is about 802.5325425545.

The spelling of 516877891 in words is "five hundred sixteen million, eight hundred seventy-seven thousand, eight hundred ninety-one".