8248021 has 2 divisors, whose sum is σ = 8248022. Its totient is φ = 8248020.

The previous prime is 8248013. The next prime is 8248027. The reversal of 8248021 is 1208428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 239121 = 2830^2 + 489^2 .

It is a cyclic number.

It is not a de Polignac number, because 8248021 - 2³ = 8248013 is a prime.

It is a super-3 number, since 3×8248021³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8248027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4124010 + 4124011.

It is an arithmetic number, because the mean of its divisors is an integer number (4124011).

Almost surely, 2^8248021 is an apocalyptic number.

It is an amenable number.

8248021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8248021 is an equidigital number, since it uses as much as digits as its factorization.

8248021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 8248021 is about 2871.9368029259. The cubic root of 8248021 is about 202.0458429431.

The spelling of 8248021 in words is "eight million, two hundred forty-eight thousand, twenty-one".