45219 has 4 divisors (see below), whose sum is σ = 60296. Its totient is φ = 30144.

The previous prime is 45197. The next prime is 45233. The reversal of 45219 is 91254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45219 - 2⁸ = 44963 is a prime.

It is a super-2 number, since 2×45219² = 4089515922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 7 and base 14.

It is a junction number, because it is equal to n+sod(n) for n = 45195 and 45204.

It is not an unprimeable number, because it can be changed into a prime (45259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7534 + ... + 7539.

It is an arithmetic number, because the mean of its divisors is an integer number (15074).

2⁴⁵²¹⁹ is an apocalyptic number.

45219 is a deficient number, since it is larger than the sum of its proper divisors (15077).

45219 is a wasteful number, since it uses less digits than its factorization.

45219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15076.

The product of its digits is 360, while the sum is 21.

The square root of 45219 is about 212.6475958011. The cubic root of 45219 is about 35.6265404074.

The spelling of 45219 in words is "forty-five thousand, two hundred nineteen".