545155520 has 224 divisors, whose sum is σ = 1622560128. Its totient is φ = 169869312.

The previous prime is 545155519. The next prime is 545155531. The reversal of 545155520 is 25551545.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2824544 + ... + 2824736.

It is an arithmetic number, because the mean of its divisors is an integer number (7243572).

Almost surely, 2^545155520 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 545155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811280064).

545155520 is an abundant number, since it is smaller than the sum of its proper divisors (1077404608).

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

545155520 is a wasteful number, since it uses less digits than its factorization.

545155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 545155520 is about 23348.5656947060. The cubic root of 545155520 is about 816.9086059984.

The spelling of 545155520 in words is "five hundred forty-five million, one hundred fifty-five thousand, five hundred twenty".