511085 has 4 divisors (see below), whose sum is σ = 613308. Its totient is φ = 408864.

The previous prime is 511061. The next prime is 511087. The reversal of 511085 is 580115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 252004 = 509^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 511085 - 2¹⁰ = 510061 is a prime.

It is a super-2 number, since 2×511085² = 522415754450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51104 + ... + 51113.

It is an arithmetic number, because the mean of its divisors is an integer number (153327).

2⁵¹¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

511085 is a deficient number, since it is larger than the sum of its proper divisors (102223).

511085 is a wasteful number, since it uses less digits than its factorization.

511085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102222.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 511085 is about 714.9020911985. The cubic root of 511085 is about 79.9523153328.

The spelling of 511085 in words is "five hundred eleven thousand, eighty-five".