13501613 has 4 divisors (see below), whose sum is σ = 13815648. Its totient is φ = 13187580.

The previous prime is 13501603. The next prime is 13501637. The reversal of 13501613 is 31610531.

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.

It is a cyclic number.

It is not a de Polignac number, because 13501613 - 2⁴ = 13501597 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 (13501603) 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, 156953 + ... + 157038.

It is an arithmetic number, because the mean of its divisors is an integer number (3453912).

Almost surely, 2^13501613 is an apocalyptic number.

It is an amenable number.

13501613 is a deficient number, since it is larger than the sum of its proper divisors (314035).

13501613 is an equidigital number, since it uses as much as digits as its factorization.

13501613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314034.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 13501613 is about 3674.4541091161. The cubic root of 13501613 is about 238.1196406690.

The spelling of 13501613 in words is "thirteen million, five hundred one thousand, six hundred thirteen".