13045 has 4 divisors (see below), whose sum is σ = 15660. Its totient is φ = 10432.

The previous prime is 13043. The next prime is 13049. The reversal of 13045 is 54031.

13045 = T₄₆ + T₄₇ + ... + T₅₅.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54031 = 71 ⋅761.

It can be written as a sum of positive squares in 2 ways, for example, as 5476 + 7569 = 74^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 13045 - 2¹ = 13043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (3915).

2¹³⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

13045 is a deficient number, since it is larger than the sum of its proper divisors (2615).

13045 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 7 representation: 13045 = (53014)₇.

13045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 13045 is about 114.2147100859. The cubic root of 13045 is about 23.5404464174.

Adding to 13045 its reverse (54031), we get a palindrome (67076).

The spelling of 13045 in words is "thirteen thousand, forty-five".