516685091 has 16 divisors (see below), whose sum is σ = 578823168. Its totient is φ = 457984800.

The previous prime is 516685079. The next prime is 516685123. The reversal of 516685091 is 190586615.

It is not a de Polignac number, because 516685091 - 2¹⁴ = 516668707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516685691) 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 15 ways as a sum of consecutive naturals, for example, 47900 + ... + 57686.

It is an arithmetic number, because the mean of its divisors is an integer number (36176448).

Almost surely, 2^516685091 is an apocalyptic number.

516685091 is a deficient number, since it is larger than the sum of its proper divisors (62138077).

516685091 is a wasteful number, since it uses less digits than its factorization.

516685091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9962.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 516685091 is about 22730.7081059962. The cubic root of 516685091 is about 802.4327462459.

The spelling of 516685091 in words is "five hundred sixteen million, six hundred eighty-five thousand, ninety-one".