13552409 has 8 divisors (see below), whose sum is σ = 14801472. Its totient is φ = 12332880.

The previous prime is 13552393. The next prime is 13552421. The reversal of 13552409 is 90425531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13552409 - 2⁴ = 13552393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13551409) 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 7 ways as a sum of consecutive naturals, for example, 6419 + ... + 8264.

It is an arithmetic number, because the mean of its divisors is an integer number (1850184).

Almost surely, 2^13552409 is an apocalyptic number.

It is an amenable number.

13552409 is a deficient number, since it is larger than the sum of its proper divisors (1249063).

13552409 is a wasteful number, since it uses less digits than its factorization.

13552409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14767.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 13552409 is about 3681.3596672969. The cubic root of 13552409 is about 238.4178862250.

The spelling of 13552409 in words is "thirteen million, five hundred fifty-two thousand, four hundred nine".