506161 has 8 divisors (see below), whose sum is σ = 538560. Its totient is φ = 474672.

The previous prime is 506147. The next prime is 506171. The reversal of 506161 is 161605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 506161 - 2¹³ = 497969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (67320).

2⁵⁰⁶¹⁶¹ is an apocalyptic number.

It is an amenable number.

506161 is a deficient number, since it is larger than the sum of its proper divisors (32399).

506161 is a wasteful number, since it uses less digits than its factorization.

506161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

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

The square root of 506161 is about 711.4499279640. The cubic root of 506161 is about 79.6947219650.

Adding to 506161 its reverse (161605), we get a palindrome (667766).

The spelling of 506161 in words is "five hundred six thousand, one hundred sixty-one".