516641 has 4 divisors (see below), whose sum is σ = 529284. Its totient is φ = 504000.

The previous prime is 516623. The next prime is 516643. The reversal of 516641 is 146615.

516641 = T₂₃ + T₂₄ + ... + T₁₄₅.

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 87616 + 429025 = 296^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 516641 - 2¹⁴ = 500257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 516641.

It is not an unprimeable number, because it can be changed into a prime (516643) 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, 6260 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (132321).

2⁵¹⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

516641 is a deficient number, since it is larger than the sum of its proper divisors (12643).

516641 is a wasteful number, since it uses less digits than its factorization.

516641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642.

The product of its digits is 720, while the sum is 23.

The square root of 516641 is about 718.7774342590. Note that the first 3 decimals coincide. The cubic root of 516641 is about 80.2409920564.

The spelling of 516641 in words is "five hundred sixteen thousand, six hundred forty-one".