13523401 has 4 divisors (see below), whose sum is σ = 13562500. Its totient is φ = 13484304.

The previous prime is 13523387. The next prime is 13523413. The reversal of 13523401 is 10432531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10432531 = 43 ⋅242617.

It can be written as a sum of positive squares in 2 ways, for example, as 8415801 + 5107600 = 2901^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 13523401 - 2⁵ = 13523369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13527401) 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 3 ways as a sum of consecutive naturals, for example, 19026 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (3390625).

Almost surely, 2^13523401 is an apocalyptic number.

It is an amenable number.

13523401 is a deficient number, since it is larger than the sum of its proper divisors (39099).

13523401 is an equidigital number, since it uses as much as digits as its factorization.

13523401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39098.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13523401 is about 3677.4177081207. The cubic root of 13523401 is about 238.2476590144.

Adding to 13523401 its reverse (10432531), we get a palindrome (23955932).

It can be divided in two parts, 13523 and 401, that added together give a square (13924 = 118²).

The spelling of 13523401 in words is "thirteen million, five hundred twenty-three thousand, four hundred one".