45158219 has 4 divisors (see below), whose sum is σ = 45181560. Its totient is φ = 45134880.

The previous prime is 45158209. The next prime is 45158237. The reversal of 45158219 is 91285154.

45158219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 45158219 - 2¹⁶ = 45092683 is a prime.

It is a super-2 number, since 2×45158219² = 4078529486503922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45158209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8477 + ... + 12734.

It is an arithmetic number, because the mean of its divisors is an integer number (11295390).

Almost surely, 2^45158219 is an apocalyptic number.

45158219 is a deficient number, since it is larger than the sum of its proper divisors (23341).

45158219 is a wasteful number, since it uses less digits than its factorization.

45158219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340.

The product of its digits is 14400, while the sum is 35.

The square root of 45158219 is about 6719.9865327246. The cubic root of 45158219 is about 356.1057080986.

The spelling of 45158219 in words is "forty-five million, one hundred fifty-eight thousand, two hundred nineteen".