13198521 has 24 divisors (see below), whose sum is σ = 21238464. Its totient is φ = 7140960.

The previous prime is 13198501. The next prime is 13198541. The reversal of 13198521 is 12589131.

13198521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13198501) and next prime (13198541).

It is not a de Polignac number, because 13198521 - 2⁵ = 13198489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13198501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6711 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (884936).

Almost surely, 2^13198521 is an apocalyptic number.

It is an amenable number.

13198521 is a deficient number, since it is larger than the sum of its proper divisors (8039943).

13198521 is a wasteful number, since it uses less digits than its factorization.

13198521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789 (or 1770 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 13198521 is about 3632.9768785391. The cubic root of 13198521 is about 236.3243230787.

The spelling of 13198521 in words is "thirteen million, one hundred ninety-eight thousand, five hundred twenty-one".