45190090 has 16 divisors (see below), whose sum is σ = 88737120. Its totient is φ = 16432720.

The previous prime is 45190049. The next prime is 45190099. The reversal of 45190090 is 9009154.

45190090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (45190099) 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, 205300 + ... + 205519.

It is an arithmetic number, because the mean of its divisors is an integer number (5546070).

Almost surely, 2^45190090 is an apocalyptic number.

45190090 is a deficient number, since it is larger than the sum of its proper divisors (43547030).

45190090 is a wasteful number, since it uses less digits than its factorization.

45190090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410837.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 45190090 is about 6722.3574733868. The cubic root of 45190090 is about 356.1894638085.

The spelling of 45190090 in words is "forty-five million, one hundred ninety thousand, ninety".