545000000 has 112 divisors (see below), whose sum is σ = 1364254320. Its totient is φ = 216000000.

The previous prime is 544999999. The next prime is 545000039. The reversal of 545000000 is 545.

It can be written as a sum of positive squares in 8 ways, for example, as 464143936 + 80856064 = 21544^2 + 8992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4999946 + ... + 5000054.

Almost surely, 2^545000000 is an apocalyptic number.

545000000 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 545000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682127160).

545000000 is an abundant number, since it is smaller than the sum of its proper divisors (819254320).

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

545000000 is an frugal number, since it uses more digits than its factorization.

545000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 545000000 is about 23345.2350598575. The cubic root of 545000000 is about 816.8309170304.

Adding to 545000000 its reverse (545), we get a palindrome (545000545).

Multiplying 545000000 by its reverse (545), we get a square (297025000000 = 545000²).

545000000 divided by its reverse (545) gives a 6-th power (1000000 = 10⁶).

It can be divided in two parts, 5 and 45000000, that multiplied together give a square (225000000 = 15000²).

The spelling of 545000000 in words is "five hundred forty-five million", and thus it is an aban number.