13403545 has 4 divisors (see below), whose sum is σ = 16084260. Its totient is φ = 10722832.

The previous prime is 13403519. The next prime is 13403567. The reversal of 13403545 is 54530431.

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 1734489 + 11669056 = 1317^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 13403545 - 2⁵ = 13403513 is a prime.

It is an unprimeable number.

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, 1340350 + ... + 1340359.

It is an arithmetic number, because the mean of its divisors is an integer number (4021065).

Almost surely, 2^13403545 is an apocalyptic number.

It is an amenable number.

13403545 is a deficient number, since it is larger than the sum of its proper divisors (2680715).

13403545 is an equidigital number, since it uses as much as digits as its factorization.

13403545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680714.

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

The square root of 13403545 is about 3661.0852216249. The cubic root of 13403545 is about 237.5417175102.

Adding to 13403545 its reverse (54530431), we get a palindrome (67933976).

The spelling of 13403545 in words is "thirteen million, four hundred three thousand, five hundred forty-five".