45248219 has 4 divisors (see below), whose sum is σ = 45393096. Its totient is φ = 45103344.

The previous prime is 45248183. The next prime is 45248233. The reversal of 45248219 is 91284254.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45248219 is a prime.

It is a super-2 number, since 2×45248219² = 4094802645343922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45248239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71969 + ... + 72594.

It is an arithmetic number, because the mean of its divisors is an integer number (11348274).

Almost surely, 2^45248219 is an apocalyptic number.

45248219 is a deficient number, since it is larger than the sum of its proper divisors (144877).

45248219 is a wasteful number, since it uses less digits than its factorization.

45248219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144876.

The product of its digits is 23040, while the sum is 35.

The square root of 45248219 is about 6726.6796415468. The cubic root of 45248219 is about 356.3421231337.

The spelling of 45248219 in words is "forty-five million, two hundred forty-eight thousand, two hundred nineteen".