516134721 has 8 divisors (see below), whose sum is σ = 711910080. Its totient is φ = 332224592.

The previous prime is 516134693. The next prime is 516134737. The reversal of 516134721 is 127431615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516134721 - 2⁶ = 516134657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516134741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2966205 + ... + 2966378.

It is an arithmetic number, because the mean of its divisors is an integer number (88988760).

Almost surely, 2^516134721 is an apocalyptic number.

It is an amenable number.

516134721 is a deficient number, since it is larger than the sum of its proper divisors (195775359).

516134721 is a wasteful number, since it uses less digits than its factorization.

516134721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932615.

The product of its digits is 5040, while the sum is 30.

The square root of 516134721 is about 22718.5985703344. The cubic root of 516134721 is about 802.1477294338.

The spelling of 516134721 in words is "five hundred sixteen million, one hundred thirty-four thousand, seven hundred twenty-one".