516465385 has 4 divisors (see below), whose sum is σ = 619758468. Its totient is φ = 413172304.

The previous prime is 516465371. The next prime is 516465449. The reversal of 516465385 is 583564615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 463627024 = 7269^2 + 21532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516465385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51646534 + ... + 51646543.

It is an arithmetic number, because the mean of its divisors is an integer number (154939617).

Almost surely, 2^516465385 is an apocalyptic number.

It is an amenable number.

516465385 is a deficient number, since it is larger than the sum of its proper divisors (103293083).

516465385 is a wasteful number, since it uses less digits than its factorization.

516465385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103293082.

The product of its digits is 432000, while the sum is 43.

The square root of 516465385 is about 22725.8747906434. The cubic root of 516465385 is about 802.3189927000.

The spelling of 516465385 in words is "five hundred sixteen million, four hundred sixty-five thousand, three hundred eighty-five".