516555049 has 2 divisors, whose sum is σ = 516555050. Its totient is φ = 516555048.

The previous prime is 516555041. The next prime is 516555097. The reversal of 516555049 is 940555615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477116649 + 39438400 = 21843^2 + 6280^2 .

It is a cyclic number.

It is not a de Polignac number, because 516555049 - 2³ = 516555041 is a prime.

It is equal to p_27180796 and since 516555049 and 27180796 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 (516555041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258277524 + 258277525.

It is an arithmetic number, because the mean of its divisors is an integer number (258277525).

Almost surely, 2^516555049 is an apocalyptic number.

It is an amenable number.

516555049 is a deficient number, since it is larger than the sum of its proper divisors (1).

516555049 is an equidigital number, since it uses as much as digits as its factorization.

516555049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 516555049 is about 22727.8474343700. The cubic root of 516555049 is about 802.3654204436.

The spelling of 516555049 in words is "five hundred sixteen million, five hundred fifty-five thousand, forty-nine".