45781278 has 8 divisors (see below), whose sum is σ = 91562568. Its totient is φ = 15260424.

The previous prime is 45781273. The next prime is 45781319. The reversal of 45781278 is 87218754.

45781278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

45781278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45781271) 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, 3815101 + ... + 3815112.

It is an arithmetic number, because the mean of its divisors is an integer number (11445321).

Almost surely, 2^45781278 is an apocalyptic number.

45781278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45781278 is a wasteful number, since it uses less digits than its factorization.

45781278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7630218.

The product of its digits is 125440, while the sum is 42.

The square root of 45781278 is about 6766.1863704749. The cubic root of 45781278 is about 357.7359923238.

The spelling of 45781278 in words is "forty-five million, seven hundred eighty-one thousand, two hundred seventy-eight".