45218219 has 2 divisors, whose sum is σ = 45218220. Its totient is φ = 45218218.

The previous prime is 45218213. The next prime is 45218231. The reversal of 45218219 is 91281254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45218219 - 2¹² = 45214123 is a prime.

It is a super-2 number, since 2×45218219² = 4089374659063922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45218213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22609109 + 22609110.

It is an arithmetic number, because the mean of its divisors is an integer number (22609110).

Almost surely, 2^45218219 is an apocalyptic number.

45218219 is a deficient number, since it is larger than the sum of its proper divisors (1).

45218219 is an equidigital number, since it uses as much as digits as its factorization.

45218219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 45218219 is about 6724.4493454855. The cubic root of 45218219 is about 356.2633529826.

The spelling of 45218219 in words is "forty-five million, two hundred eighteen thousand, two hundred nineteen".