13501729 has 2 divisors, whose sum is σ = 13501730. Its totient is φ = 13501728.

The previous prime is 13501727. The next prime is 13501739. The reversal of 13501729 is 92710531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12061729 + 1440000 = 3473^2 + 1200^2 .

It is a cyclic number.

It is not a de Polignac number, because 13501729 - 2¹ = 13501727 is a prime.

Together with 13501727, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13501697 and 13501706.

It is not a weakly prime, because it can be changed into another prime (13501727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6750864 + 6750865.

It is an arithmetic number, because the mean of its divisors is an integer number (6750865).

Almost surely, 2^13501729 is an apocalyptic number.

It is an amenable number.

13501729 is a deficient number, since it is larger than the sum of its proper divisors (1).

13501729 is an equidigital number, since it uses as much as digits as its factorization.

13501729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13501729 is about 3674.4698937398. The cubic root of 13501729 is about 238.1203226073.

The spelling of 13501729 in words is "thirteen million, five hundred one thousand, seven hundred twenty-nine".