52021219 has 2 divisors, whose sum is σ = 52021220. Its totient is φ = 52021218.

The previous prime is 52021201. The next prime is 52021247. The reversal of 52021219 is 91212025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52021219 - 2¹⁷ = 51890147 is a prime.

It is a super-2 number, since 2×52021219² = 5412414452491922, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 52021219.

It is not a weakly prime, because it can be changed into another prime (52091219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26010609 + 26010610.

It is an arithmetic number, because the mean of its divisors is an integer number (26010610).

Almost surely, 2^52021219 is an apocalyptic number.

52021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

52021219 is an equidigital number, since it uses as much as digits as its factorization.

52021219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 52021219 is about 7212.5736738005. The cubic root of 52021219 is about 373.3018781073.

The spelling of 52021219 in words is "fifty-two million, twenty-one thousand, two hundred nineteen".