45169478 has 4 divisors (see below), whose sum is σ = 67754220. Its totient is φ = 22584738.

The previous prime is 45169477. The next prime is 45169483. The reversal of 45169478 is 87496154.

45169478 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, and also an emirpimes, since its reverse is a distinct semiprime: 87496154 = 2 ⋅43748077.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45169477) 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 as a sum of consecutive naturals, namely, 11292368 + ... + 11292371.

It is an arithmetic number, because the mean of its divisors is an integer number (16938555).

Almost surely, 2^45169478 is an apocalyptic number.

45169478 is a deficient number, since it is larger than the sum of its proper divisors (22584742).

45169478 is a wasteful number, since it uses less digits than its factorization.

45169478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22584741.

The product of its digits is 241920, while the sum is 44.

The square root of 45169478 is about 6720.8242054081. The cubic root of 45169478 is about 356.1353007995.

The spelling of 45169478 in words is "forty-five million, one hundred sixty-nine thousand, four hundred seventy-eight".