13530857 has 2 divisors, whose sum is σ = 13530858. Its totient is φ = 13530856.

The previous prime is 13530833. The next prime is 13530871. The reversal of 13530857 is 75803531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 4596736 = 2989^2 + 2144^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530857 - 2¹⁰ = 13529833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13530457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765428 + 6765429.

It is an arithmetic number, because the mean of its divisors is an integer number (6765429).

Almost surely, 2^13530857 is an apocalyptic number.

It is an amenable number.

13530857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530857 is an equidigital number, since it uses as much as digits as its factorization.

13530857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 13530857 is about 3678.4313232681. The cubic root of 13530857 is about 238.2914361723.

The spelling of 13530857 in words is "thirteen million, five hundred thirty thousand, eight hundred fifty-seven".