13523145 has 16 divisors (see below), whose sum is σ = 21682752. Its totient is φ = 7197120.

The previous prime is 13523129. The next prime is 13523173. The reversal of 13523145 is 54132531.

13523145 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 not a de Polignac number, because 13523145 - 2⁴ = 13523129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12735 + ... + 13755.

It is an arithmetic number, because the mean of its divisors is an integer number (1355172).

Almost surely, 2^13523145 is an apocalyptic number.

13523145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13523145 is a deficient number, since it is larger than the sum of its proper divisors (8159607).

13523145 is a wasteful number, since it uses less digits than its factorization.

13523145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

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

The square root of 13523145 is about 3677.3829009229. The cubic root of 13523145 is about 238.2461556503.

Adding to 13523145 its reverse (54132531), we get a palindrome (67655676).

The spelling of 13523145 in words is "thirteen million, five hundred twenty-three thousand, one hundred forty-five".