516508397 has 8 divisors (see below), whose sum is σ = 519630720. Its totient is φ = 513394560.

The previous prime is 516508387. The next prime is 516508409. The reversal of 516508397 is 793805615.

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 516508397 - 2¹⁰ = 516507373 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 (516508387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151997 + ... + 155357.

It is an arithmetic number, because the mean of its divisors is an integer number (64953840).

Almost surely, 2^516508397 is an apocalyptic number.

It is an amenable number.

516508397 is a deficient number, since it is larger than the sum of its proper divisors (3122323).

516508397 is a wasteful number, since it uses less digits than its factorization.

516508397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 516508397 is about 22726.8210931489. The cubic root of 516508397 is about 802.3412648519.

The spelling of 516508397 in words is "five hundred sixteen million, five hundred eight thousand, three hundred ninety-seven".