545178816 has 224 divisors, whose sum is σ = 1973153280. Its totient is φ = 143741952.

The previous prime is 545178791. The next prime is 545178839. The reversal of 545178816 is 618871545.

545178816 is a `hidden beast` number, since 54 + 517 + 8 + 81 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155515 + ... + 158981.

It is an arithmetic number, because the mean of its divisors is an integer number (8808720).

Almost surely, 2^545178816 is an apocalyptic number.

545178816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545178816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986576640).

545178816 is an abundant number, since it is smaller than the sum of its proper divisors (1427974464).

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

545178816 is a wasteful number, since it uses less digits than its factorization.

545178816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3492 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 545178816 is about 23349.0645637036. The cubic root of 545178816 is about 816.9202420858.

The spelling of 545178816 in words is "five hundred forty-five million, one hundred seventy-eight thousand, eight hundred sixteen".