13734521 has 8 divisors (see below), whose sum is σ = 14694120. Its totient is φ = 12791808.

The previous prime is 13734493. The next prime is 13734527. The reversal of 13734521 is 12543731.

13734521 = 619² + 620² + ... + 652².

13734521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1210000 + 12524521 = 1100^2 + 3539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13734521 - 2¹⁰ = 13733497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13734527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (1836765).

Almost surely, 2^13734521 is an apocalyptic number.

It is an amenable number.

13734521 is a deficient number, since it is larger than the sum of its proper divisors (959599).

13734521 is an equidigital number, since it uses as much as digits as its factorization.

13734521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443.

The product of its digits is 2520, while the sum is 26.

The square root of 13734521 is about 3706.0114678722. The cubic root of 13734521 is about 239.4810604456.

The spelling of 13734521 in words is "thirteen million, seven hundred thirty-four thousand, five hundred twenty-one".