65545219 has 2 divisors, whose sum is σ = 65545220. Its totient is φ = 65545218.

The previous prime is 65545199. The next prime is 65545223. The reversal of 65545219 is 91254556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65545219 - 2⁷ = 65545091 is a prime.

It is a super-2 number, since 2×65545219² = 8592351467515922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65545289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32772609 + 32772610.

It is an arithmetic number, because the mean of its divisors is an integer number (32772610).

Almost surely, 2^65545219 is an apocalyptic number.

65545219 is a deficient number, since it is larger than the sum of its proper divisors (1).

65545219 is an equidigital number, since it uses as much as digits as its factorization.

65545219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 37.

The square root of 65545219 is about 8096.0001852767. Note that the first 3 decimals coincide. The cubic root of 65545219 is about 403.1936400477.

The spelling of 65545219 in words is "sixty-five million, five hundred forty-five thousand, two hundred nineteen".