13733521 has 4 divisors (see below), whose sum is σ = 13775344. Its totient is φ = 13691700.

The previous prime is 13733513. The next prime is 13733539. The reversal of 13733521 is 12533731.

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 13733521 - 2³ = 13733513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13733581) 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, 20415 + ... + 21076.

It is an arithmetic number, because the mean of its divisors is an integer number (3443836).

Almost surely, 2^13733521 is an apocalyptic number.

It is an amenable number.

13733521 is a deficient number, since it is larger than the sum of its proper divisors (41823).

13733521 is an equidigital number, since it uses as much as digits as its factorization.

13733521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41822.

The product of its digits is 1890, while the sum is 25.

The square root of 13733521 is about 3705.8765494819. The cubic root of 13733521 is about 239.4752481601.

The spelling of 13733521 in words is "thirteen million, seven hundred thirty-three thousand, five hundred twenty-one".