545871564 has 216 divisors, whose sum is σ = 1725403680. Its totient is φ = 144571392.

The previous prime is 545871551. The next prime is 545871607. The reversal of 545871564 is 465178545.

545871564 is a `hidden beast` number, since 5 + 4 + 5 + 87 + 1 + 564 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3268609 + ... + 3268775.

It is an arithmetic number, because the mean of its divisors is an integer number (7987980).

Almost surely, 2^545871564 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 545871564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (862701840).

545871564 is an abundant number, since it is smaller than the sum of its proper divisors (1179532116).

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

545871564 is a wasteful number, since it uses less digits than its factorization.

545871564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 305 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 545871564 is about 23363.8944527662. The cubic root of 545871564 is about 817.2661104598.

The spelling of 545871564 in words is "five hundred forty-five million, eight hundred seventy-one thousand, five hundred sixty-four".