545807172 has 24 divisors (see below), whose sum is σ = 1276886016. Its totient is φ = 181459168.

The previous prime is 545807161. The next prime is 545807179. The reversal of 545807172 is 271708545.

It is a self number, because there is not a number n which added to its sum of digits gives 545807172.

It is not an unprimeable number, because it can be changed into a prime (545807179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54783 + ... + 63974.

It is an arithmetic number, because the mean of its divisors is an integer number (53203584).

Almost surely, 2^545807172 is an apocalyptic number.

It is an amenable number.

545807172 is an abundant number, since it is smaller than the sum of its proper divisors (731078844).

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

545807172 is a wasteful number, since it uses less digits than its factorization.

545807172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119147 (or 119145 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 545807172 is about 23362.5163884373. The cubic root of 545807172 is about 817.2339737985.

The spelling of 545807172 in words is "five hundred forty-five million, eight hundred seven thousand, one hundred seventy-two".