516056661 has 6 divisors (see below), whose sum is σ = 745415190. Its totient is φ = 344037768.

The previous prime is 516056647. The next prime is 516056699. The reversal of 516056661 is 166650615.

It can be written as a sum of positive squares in only one way, i.e., 364619025 + 151437636 = 19095^2 + 12306^2 .

It is not a de Polignac number, because 516056661 - 2¹⁷ = 515925589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516056561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28669806 + ... + 28669823.

It is an arithmetic number, because the mean of its divisors is an integer number (124235865).

Almost surely, 2^516056661 is an apocalyptic number.

It is an amenable number.

516056661 is a deficient number, since it is larger than the sum of its proper divisors (229358529).

516056661 is a wasteful number, since it uses less digits than its factorization.

516056661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57339635 (or 57339632 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 516056661 is about 22716.8805296854. The cubic root of 516056661 is about 802.1072885656.

The spelling of 516056661 in words is "five hundred sixteen million, fifty-six thousand, six hundred sixty-one".