545508864 has 80 divisors (see below), whose sum is σ = 1614785040. Its totient is φ = 181831680.

The previous prime is 545508823. The next prime is 545508881. The reversal of 545508864 is 468805545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5907 + ... + 33554.

It is an arithmetic number, because the mean of its divisors is an integer number (20184813).

Almost surely, 2^545508864 is an apocalyptic number.

545508864 is a gapful number since it is divisible by the number (54) 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 545508864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807392520).

545508864 is an abundant number, since it is smaller than the sum of its proper divisors (1069276176).

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

545508864 is an equidigital number, since it uses as much as digits as its factorization.

545508864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39488 (or 39466 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The square root of 545508864 is about 23356.1311864786. The cubic root of 545508864 is about 817.0850617090.

The spelling of 545508864 in words is "five hundred forty-five million, five hundred eight thousand, eight hundred sixty-four".