260531 has 4 divisors (see below), whose sum is σ = 264864. Its totient is φ = 256200.

The previous prime is 260527. The next prime is 260539. The reversal of 260531 is 135062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135062 = 2 ⋅67531.

It is not a de Polignac number, because 260531 - 2² = 260527 is a prime.

It is a super-2 number, since 2×260531² = 135752803922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (66216).

2²⁶⁰⁵³¹ is an apocalyptic number.

260531 is a deficient number, since it is larger than the sum of its proper divisors (4333).

260531 is an equidigital number, since it uses as much as digits as its factorization.

260531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 260531 is about 510.4223741177. The cubic root of 260531 is about 63.8684635680.

Adding to 260531 its reverse (135062), we get a palindrome (395593).

The spelling of 260531 in words is "two hundred sixty thousand, five hundred thirty-one".