5320421 has 2 divisors, whose sum is σ = 5320422. Its totient is φ = 5320420.

The previous prime is 5320409. The next prime is 5320423. The reversal of 5320421 is 1240235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5313025 + 7396 = 2305^2 + 86^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5320421 is a prime.

Together with 5320423, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5320421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5320423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660210 + 2660211.

It is an arithmetic number, because the mean of its divisors is an integer number (2660211).

Almost surely, 2^5320421 is an apocalyptic number.

It is an amenable number.

5320421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5320421 is an equidigital number, since it uses as much as digits as its factorization.

5320421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 5320421 is about 2306.6037804530. The cubic root of 5320421 is about 174.5749794775.

Adding to 5320421 its reverse (1240235), we get a palindrome (6560656).

The spelling of 5320421 in words is "five million, three hundred twenty thousand, four hundred twenty-one".