22543219 has 2 divisors, whose sum is σ = 22543220. Its totient is φ = 22543218.

The previous prime is 22543181. The next prime is 22543259. The reversal of 22543219 is 91234522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22543219 - 2¹¹ = 22541171 is a prime.

It is a super-2 number, since 2×22543219² = 1016393445763922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22543259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11271609 + 11271610.

It is an arithmetic number, because the mean of its divisors is an integer number (11271610).

Almost surely, 2^22543219 is an apocalyptic number.

22543219 is a deficient number, since it is larger than the sum of its proper divisors (1).

22543219 is an equidigital number, since it uses as much as digits as its factorization.

22543219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 22543219 is about 4747.9699872682. The cubic root of 22543219 is about 282.4914514342.

The spelling of 22543219 in words is "twenty-two million, five hundred forty-three thousand, two hundred nineteen".