260557 has 4 divisors (see below), whose sum is σ = 284256. Its totient is φ = 236860.

The previous prime is 260551. The next prime is 260569. The reversal of 260557 is 755062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 260557 - 2³ = 260549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260551) 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, 11833 + ... + 11854.

It is an arithmetic number, because the mean of its divisors is an integer number (71064).

2²⁶⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

260557 is a deficient number, since it is larger than the sum of its proper divisors (23699).

260557 is a wasteful number, since it uses less digits than its factorization.

260557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23698.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 260557 is about 510.4478425853. The cubic root of 260557 is about 63.8705881070.

It can be divided in two parts, 26055 and 7, that added together give a palindrome (26062).

The spelling of 260557 in words is "two hundred sixty thousand, five hundred fifty-seven".