45005090 has 64 divisors (see below), whose sum is σ = 91276416. Its totient is φ = 15869952.

The previous prime is 45005083. The next prime is 45005099. The reversal of 45005090 is 9050054.

45005090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45005099) 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 31 ways as a sum of consecutive naturals, for example, 463922 + ... + 464018.

It is an arithmetic number, because the mean of its divisors is an integer number (1426194).

Almost surely, 2^45005090 is an apocalyptic number.

45005090 is an abundant number, since it is smaller than the sum of its proper divisors (46271326).

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

45005090 is a wasteful number, since it uses less digits than its factorization.

45005090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 45005090 is about 6708.5833079720. The cubic root of 45005090 is about 355.7027407485.

It can be divided in two parts, 450050 and 90, that multiplied together give a triangular number (40504500 = T₉₀₀₀).

The spelling of 45005090 in words is "forty-five million, five thousand, ninety".