545149172 has 6 divisors (see below), whose sum is σ = 954011058. Its totient is φ = 272574584.

The previous prime is 545149153. The next prime is 545149211. The reversal of 545149172 is 271941545.

It can be written as a sum of positive squares in only one way, i.e., 512841316 + 32307856 = 22646^2 + 5684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68143643 + ... + 68143650.

It is an arithmetic number, because the mean of its divisors is an integer number (159001843).

Almost surely, 2^545149172 is an apocalyptic number.

It is an amenable number.

545149172 is a deficient number, since it is larger than the sum of its proper divisors (408861886).

545149172 is a wasteful number, since it uses less digits than its factorization.

545149172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136287297 (or 136287295 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 545149172 is about 23348.4297544824. The cubic root of 545149172 is about 816.9054351871.

The spelling of 545149172 in words is "five hundred forty-five million, one hundred forty-nine thousand, one hundred seventy-two".