545041440 has 192 divisors, whose sum is σ = 1935601920. Its totient is φ = 143216640.

The previous prime is 545041381. The next prime is 545041447. The reversal of 545041440 is 44140545.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (545041447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305832 + ... + 307608.

It is an arithmetic number, because the mean of its divisors is an integer number (10081260).

Almost surely, 2^545041440 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 545041440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (967800960).

545041440 is an abundant number, since it is smaller than the sum of its proper divisors (1390560480).

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

545041440 is a wasteful number, since it uses less digits than its factorization.

545041440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 545041440 is about 23346.1225902718. The cubic root of 545041440 is about 816.8516195474.

Adding to 545041440 its reverse (44140545), we get a palindrome (589181985).

The spelling of 545041440 in words is "five hundred forty-five million, forty-one thousand, four hundred forty".