5672021 has 2 divisors, whose sum is σ = 5672022. Its totient is φ = 5672020.

The previous prime is 5672011. The next prime is 5672057. The reversal of 5672021 is 1202765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4431025 + 1240996 = 2105^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 5672021 - 2⁶ = 5671957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5672011) 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, 2836010 + 2836011.

It is an arithmetic number, because the mean of its divisors is an integer number (2836011).

Almost surely, 2^5672021 is an apocalyptic number.

It is an amenable number.

5672021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5672021 is an equidigital number, since it uses as much as digits as its factorization.

5672021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 5672021 is about 2381.6005122606. The cubic root of 5672021 is about 178.3388424264.

Adding to 5672021 its reverse (1202765), we get a palindrome (6874786).

The spelling of 5672021 in words is "five million, six hundred seventy-two thousand, twenty-one".