516108091 has 2 divisors, whose sum is σ = 516108092. Its totient is φ = 516108090.

The previous prime is 516108071. The next prime is 516108097. The reversal of 516108091 is 190801615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516108091 is a prime.

It is equal to p_27158314 and since 516108091 and 27158314 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (516108097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258054045 + 258054046.

It is an arithmetic number, because the mean of its divisors is an integer number (258054046).

Almost surely, 2^516108091 is an apocalyptic number.

516108091 is a deficient number, since it is larger than the sum of its proper divisors (1).

516108091 is an equidigital number, since it uses as much as digits as its factorization.

516108091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 516108091 is about 22718.0124790880. The cubic root of 516108091 is about 802.1339335775.

The spelling of 516108091 in words is "five hundred sixteen million, one hundred eight thousand, ninety-one".