5202421 has 4 divisors (see below), whose sum is σ = 5945632. Its totient is φ = 4459212.

The previous prime is 5202413. The next prime is 5202433. The reversal of 5202421 is 1242025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5202421 - 2³ = 5202413 is a prime.

It is a super-2 number, since 2×5202421² = 54130368522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5202395 and 5202404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5202481) 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, 371595 + ... + 371608.

It is an arithmetic number, because the mean of its divisors is an integer number (1486408).

Almost surely, 2^5202421 is an apocalyptic number.

It is an amenable number.

5202421 is a deficient number, since it is larger than the sum of its proper divisors (743211).

5202421 is an equidigital number, since it uses as much as digits as its factorization.

5202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743210.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 5202421 is about 2280.8816277922. The cubic root of 5202421 is about 173.2747036258.

Adding to 5202421 its reverse (1242025), we get a palindrome (6444446).

The spelling of 5202421 in words is "five million, two hundred two thousand, four hundred twenty-one".