260511 has 4 divisors (see below), whose sum is σ = 347352. Its totient is φ = 173672.

The previous prime is 260489. The next prime is 260527. The reversal of 260511 is 115062.

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

It is a cyclic number.

It is not a de Polignac number, because 260511 - 2¹³ = 252319 is a prime.

It is a super-2 number, since 2×260511² = 135731962242, which contains 22 as substring.

It is a D-number.

260511 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 260511.

It is not an unprimeable number, because it can be changed into a prime (260551) 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, 43416 + ... + 43421.

It is an arithmetic number, because the mean of its divisors is an integer number (86838).

2²⁶⁰⁵¹¹ is an apocalyptic number.

260511 is a deficient number, since it is larger than the sum of its proper divisors (86841).

260511 is an equidigital number, since it uses as much as digits as its factorization.

260511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86840.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 260511 is about 510.4027821241. The cubic root of 260511 is about 63.8668292111.

Adding to 260511 its reverse (115062), we get a palindrome (375573).

The spelling of 260511 in words is "two hundred sixty thousand, five hundred eleven".