545304240 has 480 divisors, whose sum is σ = 2193609600. Its totient is φ = 120029184.

The previous prime is 545304191. The next prime is 545304281. The reversal of 545304240 is 42403545.

545304240 is a `hidden beast` number, since 54 + 530 + 42 + 40 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3659686 + ... + 3659834.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^545304240 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 545304240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096804800).

545304240 is an abundant number, since it is smaller than the sum of its proper divisors (1648305360).

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

545304240 is a wasteful number, since it uses less digits than its factorization.

545304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 545304240 is about 23351.7502556018. The cubic root of 545304240 is about 816.9828842533.

Adding to 545304240 its reverse (42403545), we get a palindrome (587707785).

The spelling of 545304240 in words is "five hundred forty-five million, three hundred four thousand, two hundred forty".