45185872 has 40 divisors (see below), whose sum is σ = 90441632. Its totient is φ = 21859200.

The previous prime is 45185849. The next prime is 45185873. The reversal of 45185872 is 27858154.

45185872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45185873) 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 7 ways as a sum of consecutive naturals, for example, 65047 + ... + 65737.

It is a vampire number, since it can be written as 5528 ⋅ 8174 (with its own digits).

Almost surely, 2^45185872 is an apocalyptic number.

It is an amenable number.

45185872 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

45185872 is a wasteful number, since it uses less digits than its factorization.

45185872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 821 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 45185872 is about 6722.0437368408. The cubic root of 45185872 is about 356.1783813351.

The spelling of 45185872 in words is "forty-five million, one hundred eighty-five thousand, eight hundred seventy-two".