545442280 has 32 divisors (see below), whose sum is σ = 1299437640. Its totient is φ = 205342720.

The previous prime is 545442269. The next prime is 545442281. The reversal of 545442280 is 82244545.

It can be written as a sum of positive squares in 4 ways, for example, as 477247716 + 68194564 = 21846^2 + 8258^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (545442281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400381 + ... + 401740.

Almost surely, 2^545442280 is an apocalyptic number.

It is an amenable number.

545442280 is an abundant number, since it is smaller than the sum of its proper divisors (753995360).

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

545442280 is a wasteful number, since it uses less digits than its factorization.

545442280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802149 (or 802145 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

The square root of 545442280 is about 23354.7057356756. The cubic root of 545442280 is about 817.0518162942.

The spelling of 545442280 in words is "five hundred forty-five million, four hundred forty-two thousand, two hundred eighty".