13145541 has 4 divisors (see below), whose sum is σ = 17527392. Its totient is φ = 8763692.

The previous prime is 13145533. The next prime is 13145557. The reversal of 13145541 is 14554131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14554131 = 3 ⋅4851377.

It is a cyclic number.

It is not a de Polignac number, because 13145541 - 2³ = 13145533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190921 + ... + 2190926.

It is an arithmetic number, because the mean of its divisors is an integer number (4381848).

Almost surely, 2^13145541 is an apocalyptic number.

It is an amenable number.

13145541 is a deficient number, since it is larger than the sum of its proper divisors (4381851).

13145541 is an equidigital number, since it uses as much as digits as its factorization.

13145541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381850.

The product of its digits is 1200, while the sum is 24.

The square root of 13145541 is about 3625.6780055598. The cubic root of 13145541 is about 236.0076903077.

Adding to 13145541 its reverse (14554131), we get a palindrome (27699672).

The spelling of 13145541 in words is "thirteen million, one hundred forty-five thousand, five hundred forty-one".