13557305 has 4 divisors (see below), whose sum is σ = 16268772. Its totient is φ = 10845840.

The previous prime is 13557293. The next prime is 13557307. The reversal of 13557305 is 50375531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50375531 = 3307 ⋅15233.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 10156969 = 1844^2 + 3187^2 .

It is not a de Polignac number, because 13557305 - 2⁴ = 13557289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13557307) 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, 1355726 + ... + 1355735.

It is an arithmetic number, because the mean of its divisors is an integer number (4067193).

Almost surely, 2^13557305 is an apocalyptic number.

It is an amenable number.

13557305 is a deficient number, since it is larger than the sum of its proper divisors (2711467).

13557305 is an equidigital number, since it uses as much as digits as its factorization.

13557305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711466.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 13557305 is about 3682.0245789511. The cubic root of 13557305 is about 238.4465933829.

The spelling of 13557305 in words is "thirteen million, five hundred fifty-seven thousand, three hundred five".