13530445 has 4 divisors (see below), whose sum is σ = 16236540. Its totient is φ = 10824352.

The previous prime is 13530421. The next prime is 13530457. The reversal of 13530445 is 54403531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10771524 + 2758921 = 3282^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530445 - 2⁹ = 13529933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353040 + ... + 1353049.

It is an arithmetic number, because the mean of its divisors is an integer number (4059135).

Almost surely, 2^13530445 is an apocalyptic number.

It is an amenable number.

13530445 is a deficient number, since it is larger than the sum of its proper divisors (2706095).

13530445 is an equidigital number, since it uses as much as digits as its factorization.

13530445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706094.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 13530445 is about 3678.3753207089. The cubic root of 13530445 is about 238.2890175753.

Adding to 13530445 its reverse (54403531), we get a palindrome (67933976).

The spelling of 13530445 in words is "thirteen million, five hundred thirty thousand, four hundred forty-five".