545541040 has 80 divisors (see below), whose sum is σ = 1431470880. Its totient is φ = 191528960.

The previous prime is 545541013. The next prime is 545541041. The reversal of 545541040 is 40145545.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (545541041) 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, 14832 + ... + 36208.

It is an arithmetic number, because the mean of its divisors is an integer number (17893386).

Almost surely, 2^545541040 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 545541040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715735440).

545541040 is an abundant number, since it is smaller than the sum of its proper divisors (885929840).

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

545541040 is a wasteful number, since it uses less digits than its factorization.

545541040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21430 (or 21424 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 545541040 is about 23356.8199890310. The cubic root of 545541040 is about 817.1011262277.

Adding to 545541040 its reverse (40145545), we get a palindrome (585686585).

The spelling of 545541040 in words is "five hundred forty-five million, five hundred forty-one thousand, forty".