13319557 has 4 divisors (see below), whose sum is σ = 13409100. Its totient is φ = 13230016.

The previous prime is 13319549. The next prime is 13319561. The reversal of 13319557 is 75591331.

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 1718721 + 11600836 = 1311^2 + 3406^2 .

It is a cyclic number.

It is not a de Polignac number, because 13319557 - 2³ = 13319549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319587) by changing a digit.

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, 44548 + ... + 44845.

It is an arithmetic number, because the mean of its divisors is an integer number (3352275).

Almost surely, 2^13319557 is an apocalyptic number.

It is an amenable number.

13319557 is a deficient number, since it is larger than the sum of its proper divisors (89543).

13319557 is an equidigital number, since it uses as much as digits as its factorization.

13319557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89542.

The product of its digits is 14175, while the sum is 34.

The square root of 13319557 is about 3649.5968270482. The cubic root of 13319557 is about 237.0445239096.

The spelling of 13319557 in words is "thirteen million, three hundred nineteen thousand, five hundred fifty-seven".