13065145 has 4 divisors (see below), whose sum is σ = 15678180. Its totient is φ = 10452112.

The previous prime is 13065131. The next prime is 13065149. The reversal of 13065145 is 54156031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54156031 = 71 ⋅762761.

It can be written as a sum of positive squares in 2 ways, for example, as 5968249 + 7096896 = 2443^2 + 2664^2 .

It is a cyclic number.

It is not a de Polignac number, because 13065145 - 2⁹ = 13064633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13065149) 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, 1306510 + ... + 1306519.

It is an arithmetic number, because the mean of its divisors is an integer number (3919545).

Almost surely, 2^13065145 is an apocalyptic number.

It is an amenable number.

13065145 is a deficient number, since it is larger than the sum of its proper divisors (2613035).

13065145 is an equidigital number, since it uses as much as digits as its factorization.

13065145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613034.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 13065145 is about 3614.5739721300. The cubic root of 13065145 is about 235.5255778554.

The spelling of 13065145 in words is "thirteen million, sixty-five thousand, one hundred forty-five".