545545000 has 320 divisors, whose sum is σ = 1731945600. Its totient is φ = 155520000.

The previous prime is 545544917. The next prime is 545545009. The reversal of 545545000 is 545545.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 545545000.

It is not an unprimeable number, because it can be changed into a prime (545545009) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5004946 + ... + 5005054.

It is an arithmetic number, because the mean of its divisors is an integer number (5412330).

Almost surely, 2^545545000 is an apocalyptic number.

545545000 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 545545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865972800).

545545000 is an abundant number, since it is smaller than the sum of its proper divisors (1186400600).

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

545545000 is a wasteful number, since it uses less digits than its factorization.

545545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 545545000 is about 23356.9047606912. The cubic root of 545545000 is about 817.1031032941.

545545000 divided by its reverse (545545) gives a cube (1000 = 10³).

It can be divided in two parts, 545 and 545000, that added together give a palindrome (545545).

The spelling of 545545000 in words is "five hundred forty-five million, five hundred forty-five thousand".