45905540 has 24 divisors (see below), whose sum is σ = 98038080. Its totient is φ = 18050528.

The previous prime is 45905537. The next prime is 45905581. The reversal of 45905540 is 4550954.

It is a happy number.

45905540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 45905497 and 45905506.

It is an unprimeable number.

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, 18272 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (4084920).

Almost surely, 2^45905540 is an apocalyptic number.

It is an amenable number.

45905540 is an abundant number, since it is smaller than the sum of its proper divisors (52132540).

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

45905540 is a wasteful number, since it uses less digits than its factorization.

45905540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38971 (or 38969 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 45905540 is about 6775.3627209176. The cubic root of 45905540 is about 358.0593620028.

The spelling of 45905540 in words is "forty-five million, nine hundred five thousand, five hundred forty".