545644560 has 80 divisors (see below), whose sum is σ = 1707997824. Its totient is φ = 144086016.

The previous prime is 545644543. The next prime is 545644577. The reversal of 545644560 is 65446545.

It is an interprime number because it is at equal distance from previous prime (545644543) and next prime (545644577).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13684 + ... + 35756.

Almost surely, 2^545644560 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 545644560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853998912).

545644560 is an abundant number, since it is smaller than the sum of its proper divisors (1162353264).

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

545644560 is a wasteful number, since it uses less digits than its factorization.

545644560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22192 (or 22186 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 545644560 is about 23359.0359390108. The cubic root of 545644560 is about 817.1528063964.

The spelling of 545644560 in words is "five hundred forty-five million, six hundred forty-four thousand, five hundred sixty".