545128812 has 48 divisors (see below), whose sum is σ = 1416492000. Its totient is φ = 181298880.

The previous prime is 545128763. The next prime is 545128813. The reversal of 545128812 is 218821545.

545128812 is a `hidden beast` number, since 54 + 512 + 88 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (545128813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44314 + ... + 55262.

It is an arithmetic number, because the mean of its divisors is an integer number (29510250).

Almost surely, 2^545128812 is an apocalyptic number.

It is an amenable number.

545128812 is an abundant number, since it is smaller than the sum of its proper divisors (871363188).

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

545128812 is a wasteful number, since it uses less digits than its factorization.

545128812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11423 (or 11415 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 545128812 is about 23347.9937467869. The cubic root of 545128812 is about 816.8952652479.

The spelling of 545128812 in words is "five hundred forty-five million, one hundred twenty-eight thousand, eight hundred twelve".