5730821 has 2 divisors, whose sum is σ = 5730822. Its totient is φ = 5730820.

The previous prime is 5730811. The next prime is 5730833. The reversal of 5730821 is 1280375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 1060900 = 2161^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 5730821 - 2¹⁰ = 5729797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5730811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2865410 + 2865411.

It is an arithmetic number, because the mean of its divisors is an integer number (2865411).

Almost surely, 2^5730821 is an apocalyptic number.

It is an amenable number.

5730821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5730821 is an equidigital number, since it uses as much as digits as its factorization.

5730821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 5730821 is about 2393.9133234100. The cubic root of 5730821 is about 178.9529853743.

The spelling of 5730821 in words is "five million, seven hundred thirty thousand, eight hundred twenty-one".