13553361 has 6 divisors (see below), whose sum is σ = 19577090. Its totient is φ = 9035568.

The previous prime is 13553347. The next prime is 13553381. The reversal of 13553361 is 16335531.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 3600 = 3681^2 + 60^2 .

It is not a de Polignac number, because 13553361 - 2¹⁰ = 13552337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13553311) 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, 752956 + ... + 752973.

Almost surely, 2^13553361 is an apocalyptic number.

It is an amenable number.

13553361 is a deficient number, since it is larger than the sum of its proper divisors (6023729).

13553361 is a wasteful number, since it uses less digits than its factorization.

13553361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505935 (or 1505932 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 13553361 is about 3681.4889650792. The cubic root of 13553361 is about 238.4234687138.

Adding to 13553361 its reverse (16335531), we get a palindrome (29888892).

The spelling of 13553361 in words is "thirteen million, five hundred fifty-three thousand, three hundred sixty-one".