45044540 has 48 divisors (see below), whose sum is σ = 100548000. Its totient is φ = 16918272.

The previous prime is 45044537. The next prime is 45044551. The reversal of 45044540 is 4544054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20411 + ... + 22509.

It is an arithmetic number, because the mean of its divisors is an integer number (2094750).

Almost surely, 2^45044540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45044540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50274000).

45044540 is an abundant number, since it is smaller than the sum of its proper divisors (55503460).

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

45044540 is a wasteful number, since it uses less digits than its factorization.

45044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 45044540 is about 6711.5229270263. The cubic root of 45044540 is about 355.8066428848.

Adding to 45044540 its reverse (4544054), we get a palindrome (49588594).

The spelling of 45044540 in words is "forty-five million, forty-four thousand, five hundred forty".