516359881 has 2 divisors, whose sum is σ = 516359882. Its totient is φ = 516359880.

The previous prime is 516359803. The next prime is 516359891. The reversal of 516359881 is 188953615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505575225 + 10784656 = 22485^2 + 3284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516359881 is a prime.

It is a super-2 number, since 2×516359881² = 533255053412668322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (516359801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258179940 + 258179941.

It is an arithmetic number, because the mean of its divisors is an integer number (258179941).

Almost surely, 2^516359881 is an apocalyptic number.

It is an amenable number.

516359881 is a deficient number, since it is larger than the sum of its proper divisors (1).

516359881 is an equidigital number, since it uses as much as digits as its factorization.

516359881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 46.

The square root of 516359881 is about 22723.5534413084. The cubic root of 516359881 is about 802.2643561712.

It can be divided in two parts, 51635 and 9881, that added together give a palindrome (61516).

The spelling of 516359881 in words is "five hundred sixteen million, three hundred fifty-nine thousand, eight hundred eighty-one".