13497021 has 12 divisors (see below), whose sum is σ = 20343648. Its totient is φ = 8606664.

The previous prime is 13497013. The next prime is 13497041. The reversal of 13497021 is 12079431.

13497021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13497021 - 2³ = 13497013 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13497041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32395 + ... + 32808.

It is an arithmetic number, because the mean of its divisors is an integer number (1695304).

Almost surely, 2^13497021 is an apocalyptic number.

It is an amenable number.

13497021 is a deficient number, since it is larger than the sum of its proper divisors (6846627).

13497021 is a wasteful number, since it uses less digits than its factorization.

13497021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65232 (or 65229 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13497021 is about 3673.8292012558. The cubic root of 13497021 is about 238.0926421819.

The spelling of 13497021 in words is "thirteen million, four hundred ninety-seven thousand, twenty-one".