6216281 has 2 divisors, whose sum is σ = 6216282. Its totient is φ = 6216280.

The previous prime is 6216277. The next prime is 6216283. The reversal of 6216281 is 1826126.

6216281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3841600 + 2374681 = 1960^2 + 1541^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216281 - 2² = 6216277 is a prime.

It is a super-2 number, since 2×6216281² = 77284298941922, which contains 22 as substring.

Together with 6216283, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6216281.

It is not a weakly prime, because it can be changed into another prime (6216283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108140 + 3108141.

It is an arithmetic number, because the mean of its divisors is an integer number (3108141).

Almost surely, 2^6216281 is an apocalyptic number.

It is an amenable number.

6216281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6216281 is an equidigital number, since it uses as much as digits as its factorization.

6216281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 6216281 is about 2493.2470796133. The cubic root of 6216281 is about 183.8697191345.

The spelling of 6216281 in words is "six million, two hundred sixteen thousand, two hundred eighty-one".