511065 has 24 divisors (see below), whose sum is σ = 910728. Its totient is φ = 264960.

The previous prime is 511061. The next prime is 511087. The reversal of 511065 is 560115.

It can be written as a sum of positive squares in 4 ways, for example, as 9801 + 501264 = 99^2 + 708^2 .

It is not a de Polignac number, because 511065 - 2² = 511061 is a prime.

It is a super-2 number, since 2×511065² = 522374868450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511061) 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 23 ways as a sum of consecutive naturals, for example, 1707 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (37947).

2⁵¹¹⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

511065 is a deficient number, since it is larger than the sum of its proper divisors (399663).

511065 is a wasteful number, since it uses less digits than its factorization.

511065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 511065 is about 714.8881031322. Note that the first 3 decimals coincide. The cubic root of 511065 is about 79.9512724096.

The spelling of 511065 in words is "five hundred eleven thousand, sixty-five".