260540521 has 16 divisors (see below), whose sum is σ = 291677760. Its totient is φ = 231275520.

The previous prime is 260540513. The next prime is 260540549. The reversal of 260540521 is 125045062.

260540521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 260540521 - 2³ = 260540513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260540591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76170 + ... + 79516.

It is an arithmetic number, because the mean of its divisors is an integer number (18229860).

Almost surely, 2^260540521 is an apocalyptic number.

It is an amenable number.

260540521 is a deficient number, since it is larger than the sum of its proper divisors (31137239).

260540521 is a wasteful number, since it uses less digits than its factorization.

260540521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 260540521 is about 16141.2676391912. The cubic root of 260540521 is about 638.6924157427.

Adding to 260540521 its reverse (125045062), we get a palindrome (385585583).

The spelling of 260540521 in words is "two hundred sixty million, five hundred forty thousand, five hundred twenty-one".