5420321 has 2 divisors, whose sum is σ = 5420322. Its totient is φ = 5420320.

The previous prime is 5420309. The next prime is 5420347. The reversal of 5420321 is 1230245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 130321 = 2300^2 + 361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5420321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5420321.

It is not a weakly prime, because it can be changed into another prime (5420621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710160 + 2710161.

It is an arithmetic number, because the mean of its divisors is an integer number (2710161).

Almost surely, 2^5420321 is an apocalyptic number.

It is an amenable number.

5420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5420321 is an equidigital number, since it uses as much as digits as its factorization.

5420321 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 5420321 is about 2328.1582849970. The cubic root of 5420321 is about 175.6608590549.

Adding to 5420321 its reverse (1230245), we get a palindrome (6650566).

The spelling of 5420321 in words is "five million, four hundred twenty thousand, three hundred twenty-one".