545664224 has 48 divisors (see below), whose sum is σ = 1236060000. Its totient is φ = 232272384.

The previous prime is 545664221. The next prime is 545664227. The reversal of 545664224 is 422466545.

It is an interprime number because it is at equal distance from previous prime (545664221) and next prime (545664227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545664221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25202 + ... + 41550.

It is an arithmetic number, because the mean of its divisors is an integer number (25751250).

Almost surely, 2^545664224 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 545664224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618030000).

545664224 is an abundant number, since it is smaller than the sum of its proper divisors (690395776).

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

545664224 is a wasteful number, since it uses less digits than its factorization.

545664224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16515 (or 16507 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 545664224 is about 23359.4568430004. The cubic root of 545664224 is about 817.1626224933.

The spelling of 545664224 in words is "five hundred forty-five million, six hundred sixty-four thousand, two hundred twenty-four".