545005440 has 288 divisors, whose sum is σ = 2190366360. Its totient is φ = 124508160.

The previous prime is 545005429. The next prime is 545005469. The reversal of 545005440 is 44500545.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 281275 + ... + 283205.

Almost surely, 2^545005440 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 545005440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095183180).

545005440 is an abundant number, since it is smaller than the sum of its proper divisors (1645360920).

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

545005440 is a wasteful number, since it uses less digits than its factorization.

545005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1948 counting only the distinct ones).

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

The square root of 545005440 is about 23345.3515715656. The cubic root of 545005440 is about 816.8336347952.

Adding to 545005440 its reverse (44500545), we get a palindrome (589505985).

The spelling of 545005440 in words is "five hundred forty-five million, five thousand, four hundred forty".