545420178 has 12 divisors (see below), whose sum is σ = 1181743758. Its totient is φ = 181806720.

The previous prime is 545420177. The next prime is 545420179. The reversal of 545420178 is 871024545.

545420178 is a `hidden beast` number, since 545 + 42 + 0 + 1 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (545420177) and next prime (545420179).

It can be written as a sum of positive squares in only one way, i.e., 544615569 + 804609 = 23337^2 + 897^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545420177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15150543 + ... + 15150578.

Almost surely, 2^545420178 is an apocalyptic number.

545420178 is an abundant number, since it is smaller than the sum of its proper divisors (636323580).

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

545420178 is a wasteful number, since it uses less digits than its factorization.

545420178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301129 (or 30301126 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 545420178 is about 23354.2325500111. The cubic root of 545420178 is about 817.0407801596.

The spelling of 545420178 in words is "five hundred forty-five million, four hundred twenty thousand, one hundred seventy-eight".