45217219 has 12 divisors (see below), whose sum is σ = 47665072. Its totient is φ = 42863040.

The previous prime is 45217199. The next prime is 45217231. The reversal of 45217219 is 91271254.

It is not a de Polignac number, because 45217219 - 2⁷ = 45217091 is a prime.

It is a super-2 number, since 2×45217219² = 4089193788187922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45217259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61834 + ... + 62560.

Almost surely, 2^45217219 is an apocalyptic number.

45217219 is a deficient number, since it is larger than the sum of its proper divisors (2447853).

45217219 is an equidigital number, since it uses as much as digits as its factorization.

45217219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 805 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 45217219 is about 6724.3749895436. The cubic root of 45217219 is about 356.2607267110.

It can be divided in two parts, 452 and 17219, that added together give a palindrome (17671).

The spelling of 45217219 in words is "forty-five million, two hundred seventeen thousand, two hundred nineteen".