5138321 has 2 divisors, whose sum is σ = 5138322. Its totient is φ = 5138320.

The previous prime is 5138317. The next prime is 5138333. The reversal of 5138321 is 1238315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4363921 + 774400 = 2089^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5138321 - 2² = 5138317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5138311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2569160 + 2569161.

It is an arithmetic number, because the mean of its divisors is an integer number (2569161).

Almost surely, 2^5138321 is an apocalyptic number.

It is an amenable number.

5138321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5138321 is an equidigital number, since it uses as much as digits as its factorization.

5138321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 5138321 is about 2266.7864919308. The cubic root of 5138321 is about 172.5601106759.

The spelling of 5138321 in words is "five million, one hundred thirty-eight thousand, three hundred twenty-one".