13405045 has 4 divisors (see below), whose sum is σ = 16086060. Its totient is φ = 10724032.

The previous prime is 13405037. The next prime is 13405057. The reversal of 13405045 is 54050431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54050431 = 59 ⋅916109.

It can be written as a sum of positive squares in 2 ways, for example, as 9492561 + 3912484 = 3081^2 + 1978^2 .

It is a cyclic number.

It is not a de Polignac number, because 13405045 - 2³ = 13405037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340500 + ... + 1340509.

It is an arithmetic number, because the mean of its divisors is an integer number (4021515).

Almost surely, 2^13405045 is an apocalyptic number.

It is an amenable number.

13405045 is a deficient number, since it is larger than the sum of its proper divisors (2681015).

13405045 is an equidigital number, since it uses as much as digits as its factorization.

13405045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681014.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13405045 is about 3661.2900731846. The cubic root of 13405045 is about 237.5505783323.

Adding to 13405045 its reverse (54050431), we get a palindrome (67455476).

The spelling of 13405045 in words is "thirteen million, four hundred five thousand, forty-five".