545504520 has 128 divisors (see below), whose sum is σ = 1843015680. Its totient is φ = 127968000.

The previous prime is 545504503. The next prime is 545504521. The reversal of 545504520 is 25405545.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (545504521) 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 31 ways as a sum of consecutive naturals, for example, 34255 + ... + 47585.

It is an arithmetic number, because the mean of its divisors is an integer number (14398560).

Almost surely, 2^545504520 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 545504520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921507840).

545504520 is an abundant number, since it is smaller than the sum of its proper divisors (1297511160).

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

545504520 is a wasteful number, since it uses less digits than its factorization.

545504520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13387 (or 13383 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 545504520 is about 23356.0381914399. The cubic root of 545504520 is about 817.0828928307.

The spelling of 545504520 in words is "five hundred forty-five million, five hundred four thousand, five hundred twenty".