545560 has 32 divisors (see below), whose sum is σ = 1283040. Its totient is φ = 208384.

The previous prime is 545551. The next prime is 545579. The reversal of 545560 is 65545.

It is a congruent number.

It is an unprimeable number.

545560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (40095).

2⁵⁴⁵⁵⁶⁰ 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 545560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641520).

545560 is an abundant number, since it is smaller than the sum of its proper divisors (737480).

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

545560 is a wasteful number, since it uses less digits than its factorization.

545560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 545560 is about 738.6203354904. The cubic root of 545560 is about 81.7110592095.

The spelling of 545560 in words is "five hundred forty-five thousand, five hundred sixty".