516516461 has 4 divisors (see below), whose sum is σ = 516684252. Its totient is φ = 516348672.

The previous prime is 516516449. The next prime is 516516487. The reversal of 516516461 is 164615615.

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 464402500 + 52113961 = 21550^2 + 7219^2 .

It is a cyclic number.

It is not a de Polignac number, because 516516461 - 2²² = 512322157 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 (516519461) 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 3 ways as a sum of consecutive naturals, for example, 79190 + ... + 85463.

It is an arithmetic number, because the mean of its divisors is an integer number (129171063).

Almost surely, 2^516516461 is an apocalyptic number.

It is an amenable number.

516516461 is a deficient number, since it is larger than the sum of its proper divisors (167791).

516516461 is a wasteful number, since it uses less digits than its factorization.

516516461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167790.

The product of its digits is 21600, while the sum is 35.

The square root of 516516461 is about 22726.9985039820. The cubic root of 516516461 is about 802.3454403544.

The spelling of 516516461 in words is "five hundred sixteen million, five hundred sixteen thousand, four hundred sixty-one".