13509352 has 8 divisors (see below), whose sum is σ = 25330050. Its totient is φ = 6754672.

The previous prime is 13509343. The next prime is 13509359. The reversal of 13509352 is 25390531.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 2842596 = 3266^2 + 1686^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 13509352.

It is not an unprimeable number, because it can be changed into a prime (13509359) 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 as a sum of consecutive naturals, namely, 844327 + ... + 844342.

Almost surely, 2^13509352 is an apocalyptic number.

It is an amenable number.

13509352 is a deficient number, since it is larger than the sum of its proper divisors (11820698).

13509352 is a wasteful number, since it uses less digits than its factorization.

13509352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688675 (or 1688671 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 13509352 is about 3675.5070398518. The cubic root of 13509352 is about 238.1651279729.

Adding to 13509352 its reverse (25390531), we get a palindrome (38899883).

It can be divided in two parts, 13509 and 352, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13509352 in words is "thirteen million, five hundred nine thousand, three hundred fifty-two".