14536421 has 4 divisors (see below), whose sum is σ = 14564844. Its totient is φ = 14508000.

The previous prime is 14536409. The next prime is 14536429. The reversal of 14536421 is 12463541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12463541 = 67 ⋅186023.

It can be written as a sum of positive squares in 2 ways, for example, as 9084196 + 5452225 = 3014^2 + 2335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14536421 is a prime.

It is a super-2 number, since 2×14536421² = 422615070978482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14536429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13430 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (3641211).

Almost surely, 2^14536421 is an apocalyptic number.

It is an amenable number.

14536421 is a deficient number, since it is larger than the sum of its proper divisors (28423).

14536421 is an equidigital number, since it uses as much as digits as its factorization.

14536421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28422.

The product of its digits is 2880, while the sum is 26.

The square root of 14536421 is about 3812.6658652444. The cubic root of 14536421 is about 244.0539442228.

Subtracting from 14536421 its product of digits (2880), we obtain a palindrome (14533541).

Adding to 14536421 its reverse (12463541), we get a palindrome (26999962).

The spelling of 14536421 in words is "fourteen million, five hundred thirty-six thousand, four hundred twenty-one".