13065553 has 4 divisors (see below), whose sum is σ = 13161060. Its totient is φ = 12970048.

The previous prime is 13065527. The next prime is 13065557. The reversal of 13065553 is 35556031.

It is a happy number.

13065553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35556031 = 7 ⋅5079433.

It can be written as a sum of positive squares in 2 ways, for example, as 3775249 + 9290304 = 1943^2 + 3048^2 .

It is a cyclic number.

It is not a de Polignac number, because 13065553 - 2¹³ = 13057361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13065557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47548 + ... + 47821.

It is an arithmetic number, because the mean of its divisors is an integer number (3290265).

Almost surely, 2^13065553 is an apocalyptic number.

It is an amenable number.

13065553 is a deficient number, since it is larger than the sum of its proper divisors (95507).

13065553 is an equidigital number, since it uses as much as digits as its factorization.

13065553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95506.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 13065553 is about 3614.6304098760. The cubic root of 13065553 is about 235.5280295041.

It can be divided in two parts, 1306 and 5553, that added together give a cube (6859 = 19³).

The spelling of 13065553 in words is "thirteen million, sixty-five thousand, five hundred fifty-three".