516447 has 6 divisors (see below), whose sum is σ = 745992. Its totient is φ = 344292.

The previous prime is 516437. The next prime is 516449. The reversal of 516447 is 744615.

It is not a de Polignac number, because 516447 - 2⁴ = 516431 is a prime.

It is an Ulam number.

516447 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 516447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28683 + ... + 28700.

It is an arithmetic number, because the mean of its divisors is an integer number (124332).

2⁵¹⁶⁴⁴⁷ is an apocalyptic number.

516447 is a deficient number, since it is larger than the sum of its proper divisors (229545).

516447 is a wasteful number, since it uses less digits than its factorization.

516447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57389 (or 57386 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 516447 is about 718.6424702173. The cubic root of 516447 is about 80.2309472340.

The spelling of 516447 in words is "five hundred sixteen thousand, four hundred forty-seven".