13055201521 has 16 divisors (see below), whose sum is σ = 13617648720. Its totient is φ = 12507955200.

The previous prime is 13055201513. The next prime is 13055201531. The reversal of 13055201521 is 12510255031.

It can be written as a sum of positive squares in 8 ways, for example, as 831687921 + 12223513600 = 28839^2 + 110560^2 .

It is a cyclic number.

It is not a de Polignac number, because 13055201521 - 2³ = 13055201513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13055201501) 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, 374065 + ... + 407473.

It is an arithmetic number, because the mean of its divisors is an integer number (851103045).

Almost surely, 2^13055201521 is an apocalyptic number.

It is an amenable number.

13055201521 is a deficient number, since it is larger than the sum of its proper divisors (562447199).

13055201521 is a wasteful number, since it uses less digits than its factorization.

13055201521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33636.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 13055201521 its reverse (12510255031), we get a palindrome (25565456552).

The spelling of 13055201521 in words is "thirteen billion, fifty-five million, two hundred one thousand, five hundred twenty-one".