13135553 has 4 divisors (see below), whose sum is σ = 13706688. Its totient is φ = 12564420.

The previous prime is 13135541. The next prime is 13135601. The reversal of 13135553 is 35553131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13135553 - 2¹⁸ = 12873409 is a prime.

It is a super-3 number, since 3×13135553³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13135523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285533 + ... + 285578.

It is an arithmetic number, because the mean of its divisors is an integer number (3426672).

Almost surely, 2^13135553 is an apocalyptic number.

It is an amenable number.

13135553 is a deficient number, since it is larger than the sum of its proper divisors (571135).

13135553 is an equidigital number, since it uses as much as digits as its factorization.

13135553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571134.

The product of its digits is 3375, while the sum is 26.

The square root of 13135553 is about 3624.3003462737. The cubic root of 13135553 is about 235.9479021743.

Adding to 13135553 its reverse (35553131), we get a palindrome (48688684).

The spelling of 13135553 in words is "thirteen million, one hundred thirty-five thousand, five hundred fifty-three".