13535421 has 8 divisors (see below), whose sum is σ = 18088224. Its totient is φ = 9003120.

The previous prime is 13535381. The next prime is 13535447. The reversal of 13535421 is 12453531.

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

It is not a de Polignac number, because 13535421 - 2¹⁹ = 13011133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13535391 and 13535400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13535461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3511 + ... + 6276.

It is an arithmetic number, because the mean of its divisors is an integer number (2261028).

Almost surely, 2^13535421 is an apocalyptic number.

It is an amenable number.

13535421 is a deficient number, since it is larger than the sum of its proper divisors (4552803).

13535421 is an equidigital number, since it uses as much as digits as its factorization.

13535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10251.

The product of its digits is 1800, while the sum is 24.

The square root of 13535421 is about 3679.0516441061. The cubic root of 13535421 is about 238.3182253071.

Adding to 13535421 its reverse (12453531), we get a palindrome (25988952).

The spelling of 13535421 in words is "thirteen million, five hundred thirty-five thousand, four hundred twenty-one".