13145523 has 8 divisors (see below), whose sum is σ = 17551248. Its totient is φ = 8751744.

The previous prime is 13145513. The next prime is 13145527. The reversal of 13145523 is 32554131.

13145523 is digitally balanced in base 2 and base 4, because in such bases 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 13145523 - 2⁴ = 13145507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13145493 and 13145502.

It is not an unprimeable number, because it can be changed into a prime (13145527) 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, 15 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (2193906).

Almost surely, 2^13145523 is an apocalyptic number.

13145523 is a deficient number, since it is larger than the sum of its proper divisors (4405725).

13145523 is an equidigital number, since it uses as much as digits as its factorization.

13145523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973.

The product of its digits is 1800, while the sum is 24.

The square root of 13145523 is about 3625.6755232646. The cubic root of 13145523 is about 236.0075825870.

Adding to 13145523 its reverse (32554131), we get a palindrome (45699654).

It can be divided in two parts, 131 and 45523, that added together give a palindrome (45654).

The spelling of 13145523 in words is "thirteen million, one hundred forty-five thousand, five hundred twenty-three".