545181564 has 12 divisors (see below), whose sum is σ = 1272090344. Its totient is φ = 181727184.

The previous prime is 545181557. The next prime is 545181577. The reversal of 545181564 is 465181545.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22715887 + ... + 22715910.

Almost surely, 2^545181564 is an apocalyptic number.

It is an amenable number.

545181564 is an abundant number, since it is smaller than the sum of its proper divisors (726908780).

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

545181564 is a wasteful number, since it uses less digits than its factorization.

545181564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45431804 (or 45431802 counting only the distinct ones).

The product of its digits is 96000, while the sum is 39.

The square root of 545181564 is about 23349.1234096700. The cubic root of 545181564 is about 816.9216146588.

The spelling of 545181564 in words is "five hundred forty-five million, one hundred eighty-one thousand, five hundred sixty-four".