260521011 has 12 divisors (see below), whose sum is σ = 385486920. Its totient is φ = 169444320.

The previous prime is 260521003. The next prime is 260521021. The reversal of 260521011 is 110125062.

It is not a de Polignac number, because 260521011 - 2³ = 260521003 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (260521021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352641 + ... + 353378.

It is an arithmetic number, because the mean of its divisors is an integer number (32123910).

Almost surely, 2^260521011 is an apocalyptic number.

260521011 is a deficient number, since it is larger than the sum of its proper divisors (124965909).

260521011 is a wasteful number, since it uses less digits than its factorization.

260521011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706066 (or 706063 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 260521011 is about 16140.6632763341. The cubic root of 260521011 is about 638.6764729890.

Adding to 260521011 its reverse (110125062), we get a palindrome (370646073).

The spelling of 260521011 in words is "two hundred sixty million, five hundred twenty-one thousand, eleven".