5313821 has 2 divisors, whose sum is σ = 5313822. Its totient is φ = 5313820.

The previous prime is 5313797. The next prime is 5313823. The reversal of 5313821 is 1283135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2788900 + 2524921 = 1670^2 + 1589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5313821 is a prime.

Together with 5313823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5313823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2656910 + 2656911.

It is an arithmetic number, because the mean of its divisors is an integer number (2656911).

Almost surely, 2^5313821 is an apocalyptic number.

It is an amenable number.

5313821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5313821 is an equidigital number, since it uses as much as digits as its factorization.

5313821 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 5313821 is about 2305.1726616460. The cubic root of 5313821 is about 174.5027626594.

Adding to 5313821 its reverse (1283135), we get a palindrome (6596956).

The spelling of 5313821 in words is "five million, three hundred thirteen thousand, eight hundred twenty-one".