545445000 has 480 divisors, whose sum is σ = 2105326080. Its totient is φ = 126720000.

The previous prime is 545444971. The next prime is 545445001. The reversal of 545445000 is 544545.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (545445001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 17594985 + ... + 17595015.

It is an arithmetic number, because the mean of its divisors is an integer number (4386096).

Almost surely, 2^545445000 is an apocalyptic number.

545445000 is a gapful number since it is divisible by the number (50) 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 545445000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052663040).

545445000 is an abundant number, since it is smaller than the sum of its proper divisors (1559881080).

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

545445000 is a wasteful number, since it uses less digits than its factorization.

545445000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 545445000 is about 23354.7639679788. The cubic root of 545445000 is about 817.0531744441.

Adding to 545445000 its reverse (544545), we get a palindrome (545989545).

The spelling of 545445000 in words is "five hundred forty-five million, four hundred forty-five thousand".