13209552 has 30 divisors (see below), whose sum is σ = 36968802. Its totient is φ = 4403136.

The previous prime is 13209523. The next prime is 13209563. The reversal of 13209552 is 25590231.

13209552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 76176 = 3624^2 + 276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45723 + ... + 46010.

Almost surely, 2^13209552 is an apocalyptic number.

13209552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13209552 is an abundant number, since it is smaller than the sum of its proper divisors (23759250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13209552 is a wasteful number, since it uses less digits than its factorization.

13209552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91747 (or 91738 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13209552 is about 3634.4947379244. The cubic root of 13209552 is about 236.3901427688.

Adding to 13209552 its reverse (25590231), we get a palindrome (38799783).

The spelling of 13209552 in words is "thirteen million, two hundred nine thousand, five hundred fifty-two".