516123729 has 12 divisors (see below), whose sum is σ = 813286032. Its totient is φ = 312802200.

The previous prime is 516123721. The next prime is 516123731. The reversal of 516123729 is 927321615.

516123729 is a `hidden beast` number, since 5 + 1 + 612 + 37 + 2 + 9 = 666.

It is not a de Polignac number, because 516123729 - 2³ = 516123721 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 516123693 and 516123702.

It is not an unprimeable number, because it can be changed into a prime (516123721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2606587 + ... + 2606784.

It is an arithmetic number, because the mean of its divisors is an integer number (67773836).

Almost surely, 2^516123729 is an apocalyptic number.

It is an amenable number.

516123729 is a deficient number, since it is larger than the sum of its proper divisors (297162303).

516123729 is a wasteful number, since it uses less digits than its factorization.

516123729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213388 (or 5213385 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 516123729 is about 22718.3566527159. The cubic root of 516123729 is about 802.1420350094.

The spelling of 516123729 in words is "five hundred sixteen million, one hundred twenty-three thousand, seven hundred twenty-nine".