545881280 has 112 divisors (see below), whose sum is σ = 1491813120. Its totient is φ = 186375168.

The previous prime is 545881261. The next prime is 545881283. The reversal of 545881280 is 82188545.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (545881283) 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 15 ways as a sum of consecutive naturals, for example, 848639 + ... + 849281.

It is an arithmetic number, because the mean of its divisors is an integer number (13319760).

Almost surely, 2^545881280 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 545881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745906560).

545881280 is an abundant number, since it is smaller than the sum of its proper divisors (945931840).

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

545881280 is a wasteful number, since it uses less digits than its factorization.

545881280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 41.

The square root of 545881280 is about 23364.1023795052. The cubic root of 545881280 is about 817.2709592869.

The spelling of 545881280 in words is "five hundred forty-five million, eight hundred eighty-one thousand, two hundred eighty".