6542219 has 2 divisors, whose sum is σ = 6542220. Its totient is φ = 6542218.

The previous prime is 6542201. The next prime is 6542243. The reversal of 6542219 is 9122456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6542219 - 2¹⁶ = 6476683 is a prime.

It is a super-2 number, since 2×6542219² = 85601258887922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6542191 and 6542200.

It is not a weakly prime, because it can be changed into another prime (6542279) 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, 3271109 + 3271110.

It is an arithmetic number, because the mean of its divisors is an integer number (3271110).

Almost surely, 2^6542219 is an apocalyptic number.

6542219 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542219 is an equidigital number, since it uses as much as digits as its factorization.

6542219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 6542219 is about 2557.7761825461. The cubic root of 6542219 is about 187.0287448544.

The spelling of 6542219 in words is "six million, five hundred forty-two thousand, two hundred nineteen".