516601 has 4 divisors (see below), whose sum is σ = 518400. Its totient is φ = 514804.

The previous prime is 516599. The next prime is 516611. The reversal of 516601 is 106615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106615 = 5 ⋅21323.

It is a cyclic number.

It is not a de Polignac number, because 516601 - 2¹ = 516599 is a prime.

It is a Duffinian number.

516601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (516611) 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 3 ways as a sum of consecutive naturals, for example, 361 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2⁵¹⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

516601 is a deficient number, since it is larger than the sum of its proper divisors (1799).

516601 is a wasteful number, since it uses less digits than its factorization.

516601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 516601 is about 718.7496086955. The cubic root of 516601 is about 80.2389211648.

The spelling of 516601 in words is "five hundred sixteen thousand, six hundred one".