511081 has 8 divisors (see below), whose sum is σ = 553280. Its totient is φ = 470448.

The previous prime is 511061. The next prime is 511087. The reversal of 511081 is 180115.

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 511081 - 2⁹ = 510569 is a prime.

It is a super-3 number, since 3×511081³ = 400488880384633323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (511087) 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, 340 + ... + 1066.

It is an arithmetic number, because the mean of its divisors is an integer number (69160).

2⁵¹¹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

511081 is a deficient number, since it is larger than the sum of its proper divisors (42199).

511081 is a wasteful number, since it uses less digits than its factorization.

511081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 511081 is about 714.8992936071. The cubic root of 511081 is about 79.9521067503.

Adding to 511081 its reverse (180115), we get a palindrome (691196).

The spelling of 511081 in words is "five hundred eleven thousand, eighty-one".