13541053221 has 6 divisors (see below), whose sum is σ = 19559299110. Its totient is φ = 9027368808.

The previous prime is 13541053213. The next prime is 13541053241. The reversal of 13541053221 is 12235014531.

It can be written as a sum of positive squares in only one way, i.e., 11505780225 + 2035272996 = 107265^2 + 45114^2 .

It is not a de Polignac number, because 13541053221 - 2³ = 13541053213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13541053241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752280726 + ... + 752280743.

It is an arithmetic number, because the mean of its divisors is an integer number (3259883185).

Almost surely, 2^13541053221 is an apocalyptic number.

It is an amenable number.

13541053221 is a deficient number, since it is larger than the sum of its proper divisors (6018245889).

13541053221 is a wasteful number, since it uses less digits than its factorization.

13541053221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504561475 (or 1504561472 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 13541053221 its reverse (12235014531), we get a palindrome (25776067752).

The spelling of 13541053221 in words is "thirteen billion, five hundred forty-one million, fifty-three thousand, two hundred twenty-one".