4821997 has 2 divisors, whose sum is σ = 4821998. Its totient is φ = 4821996.

The previous prime is 4821937. The next prime is 4822001. The reversal of 4821997 is 7991284.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4791721 + 30276 = 2189^2 + 174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4821997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4821907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2410998 + 2410999.

It is an arithmetic number, because the mean of its divisors is an integer number (2410999).

Almost surely, 2^4821997 is an apocalyptic number.

It is an amenable number.

4821997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4821997 is an equidigital number, since it uses as much as digits as its factorization.

4821997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 4821997 is about 2195.9045971991. The cubic root of 4821997 is about 168.9438208283.

The spelling of 4821997 in words is "four million, eight hundred twenty-one thousand, nine hundred ninety-seven".