5278321 has 2 divisors, whose sum is σ = 5278322. Its totient is φ = 5278320.

The previous prime is 5278303. The next prime is 5278331. The reversal of 5278321 is 1238725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 608400 = 2161^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278321 - 2⁵ = 5278289 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 5278321.

It is not a weakly prime, because it can be changed into another prime (5278331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639160 + 2639161.

It is an arithmetic number, because the mean of its divisors is an integer number (2639161).

Almost surely, 2^5278321 is an apocalyptic number.

It is an amenable number.

5278321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278321 is an equidigital number, since it uses as much as digits as its factorization.

5278321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 5278321 is about 2297.4596840859. The cubic root of 5278321 is about 174.1132943405.

The spelling of 5278321 in words is "five million, two hundred seventy-eight thousand, three hundred twenty-one".