506000261 has 16 divisors (see below), whose sum is σ = 559851264. Its totient is φ = 454401984.

The previous prime is 506000251. The next prime is 506000263. The reversal of 506000261 is 162000605.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506000261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506000263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103310 + ... + 108096.

It is an arithmetic number, because the mean of its divisors is an integer number (34990704).

Almost surely, 2^506000261 is an apocalyptic number.

It is an amenable number.

506000261 is a deficient number, since it is larger than the sum of its proper divisors (53851003).

506000261 is a wasteful number, since it uses less digits than its factorization.

506000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 506000261 is about 22494.4495598359. The cubic root of 506000261 is about 796.8628498796.

Adding to 506000261 its reverse (162000605), we get a palindrome (668000866).

The spelling of 506000261 in words is "five hundred six million, two hundred sixty-one", and thus it is an aban number.