13530523 has 2 divisors, whose sum is σ = 13530524. Its totient is φ = 13530522.

The previous prime is 13530499. The next prime is 13530557. The reversal of 13530523 is 32503531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13530523 - 2²¹ = 11433371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13530494 and 13530503.

It is not a weakly prime, because it can be changed into another prime (13530563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765261 + 6765262.

It is an arithmetic number, because the mean of its divisors is an integer number (6765262).

Almost surely, 2^13530523 is an apocalyptic number.

13530523 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530523 is an equidigital number, since it uses as much as digits as its factorization.

13530523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 13530523 is about 3678.3859232006. The cubic root of 13530523 is about 238.2894754688.

The spelling of 13530523 in words is "thirteen million, five hundred thirty thousand, five hundred twenty-three".