516954709 has 4 divisors (see below), whose sum is σ = 517221900. Its totient is φ = 516687520.

The previous prime is 516954703. The next prime is 516954721. The reversal of 516954709 is 907459615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907459615 = 5 ⋅181491923.

It can be written as a sum of positive squares in 2 ways, for example, as 488631025 + 28323684 = 22105^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 516954709 - 2⁹ = 516954197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516954703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130672 + ... + 134569.

It is an arithmetic number, because the mean of its divisors is an integer number (129305475).

Almost surely, 2^516954709 is an apocalyptic number.

It is an amenable number.

516954709 is a deficient number, since it is larger than the sum of its proper divisors (267191).

516954709 is a wasteful number, since it uses less digits than its factorization.

516954709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267190.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 516954709 is about 22736.6380320398. The cubic root of 516954709 is about 802.5722978442.

The spelling of 516954709 in words is "five hundred sixteen million, nine hundred fifty-four thousand, seven hundred nine".