45540540 has 36 divisors (see below), whose sum is σ = 138140184. Its totient is φ = 12144096.

The previous prime is 45540533. The next prime is 45540559. The reversal of 45540540 is 4504554.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126322 + ... + 126681.

Almost surely, 2^45540540 is an apocalyptic number.

It is an amenable number.

45540540 is an abundant number, since it is smaller than the sum of its proper divisors (92599644).

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

45540540 is a wasteful number, since it uses less digits than its factorization.

45540540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253018 (or 253013 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 45540540 is about 6748.3731372828. The cubic root of 45540540 is about 357.1078458631.

The spelling of 45540540 in words is "forty-five million, five hundred forty thousand, five hundred forty".