545731280 has 160 divisors (see below), whose sum is σ = 1413793440. Its totient is φ = 194969600.

The previous prime is 545731267. The next prime is 545731313. The reversal of 545731280 is 82137545.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 602176 + 545129104 = 776^2 + 23348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 545731280.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3983372 + ... + 3983508.

It is an arithmetic number, because the mean of its divisors is an integer number (8836209).

Almost surely, 2^545731280 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 545731280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706896720).

545731280 is an abundant number, since it is smaller than the sum of its proper divisors (868062160).

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

545731280 is a wasteful number, since it uses less digits than its factorization.

545731280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 545731280 is about 23360.8921062531. The cubic root of 545731280 is about 817.1960944895.

The spelling of 545731280 in words is "five hundred forty-five million, seven hundred thirty-one thousand, two hundred eighty".