13755729 has 8 divisors (see below), whose sum is σ = 19751872. Its totient is φ = 8465040.

The previous prime is 13755727. The next prime is 13755739. The reversal of 13755729 is 92755731.

13755729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13755729 - 2¹ = 13755727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 352711 = 13755729 / (1 + 3 + 7 + 5 + 5 + 7 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13755727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176317 + ... + 176394.

It is an arithmetic number, because the mean of its divisors is an integer number (2468984).

Almost surely, 2^13755729 is an apocalyptic number.

It is an amenable number.

13755729 is a deficient number, since it is larger than the sum of its proper divisors (5996143).

13755729 is a wasteful number, since it uses less digits than its factorization.

13755729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352727.

The product of its digits is 66150, while the sum is 39.

The square root of 13755729 is about 3708.8716613008. The cubic root of 13755729 is about 239.6042610142.

The spelling of 13755729 in words is "thirteen million, seven hundred fifty-five thousand, seven hundred twenty-nine".