5236421 has 4 divisors (see below), whose sum is σ = 5269932. Its totient is φ = 5202912.

The previous prime is 5236409. The next prime is 5236447. The reversal of 5236421 is 1246325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 972196 + 4264225 = 986^2 + 2065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5236421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5236481) 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, 16520 + ... + 16833.

It is an arithmetic number, because the mean of its divisors is an integer number (1317483).

Almost surely, 2^5236421 is an apocalyptic number.

It is an amenable number.

5236421 is a deficient number, since it is larger than the sum of its proper divisors (33511).

5236421 is a wasteful number, since it uses less digits than its factorization.

5236421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33510.

The product of its digits is 1440, while the sum is 23.

The square root of 5236421 is about 2288.3227482154. The cubic root of 5236421 is about 173.6513585329.

The spelling of 5236421 in words is "five million, two hundred thirty-six thousand, four hundred twenty-one".