13750560521 has 4 divisors (see below), whose sum is σ = 13834919952. Its totient is φ = 13666201092.

The previous prime is 13750560493. The next prime is 13750560529. The reversal of 13750560521 is 12506505731.

13750560521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12506505731 = 137 ⋅91288363.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13750560521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13750560529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42179471 + ... + 42179796.

It is an arithmetic number, because the mean of its divisors is an integer number (3458729988).

Almost surely, 2^13750560521 is an apocalyptic number.

It is an amenable number.

13750560521 is a deficient number, since it is larger than the sum of its proper divisors (84359431).

13750560521 is an equidigital number, since it uses as much as digits as its factorization.

13750560521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84359430.

The product of its (nonzero) digits is 31500, while the sum is 35.

The spelling of 13750560521 in words is "thirteen billion, seven hundred fifty million, five hundred sixty thousand, five hundred twenty-one".