2545440044 has 48 divisors (see below), whose sum is σ = 5221440000. Its totient is φ = 1085304528.

The previous prime is 2545440041. The next prime is 2545440059. The reversal of 2545440044 is 4400445452.

2545440044 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 (2545440041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268367 + ... + 277689.

It is an arithmetic number, because the mean of its divisors is an integer number (108780000).

Almost surely, 2^2545440044 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 2545440044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610720000).

2545440044 is an abundant number, since it is smaller than the sum of its proper divisors (2675999956).

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

2545440044 is a wasteful number, since it uses less digits than its factorization.

2545440044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The square root of 2545440044 is about 50452.3541968063. The cubic root of 2545440044 is about 1365.3823693201.

Adding to 2545440044 its reverse (4400445452), we get a palindrome (6945885496).

The spelling of 2545440044 in words is "two billion, five hundred forty-five million, four hundred forty thousand, forty-four".