538047172 has 24 divisors (see below), whose sum is σ = 1014839000. Its totient is φ = 248126976.

The previous prime is 538047163. The next prime is 538047173. The reversal of 538047172 is 271740835.

It can be written as a sum of positive squares in 4 ways, for example, as 34762816 + 503284356 = 5896^2 + 22434^2 .

It is not an unprimeable number, because it can be changed into a prime (538047173) 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 7 ways as a sum of consecutive naturals, for example, 73954 + ... + 80902.

Almost surely, 2^538047172 is an apocalyptic number.

538047172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

538047172 is a deficient number, since it is larger than the sum of its proper divisors (476791828).

538047172 is a wasteful number, since it uses less digits than its factorization.

538047172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8455 (or 8453 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 538047172 is about 23195.8438518628. The cubic root of 538047172 is about 813.3424713805.

The spelling of 538047172 in words is "five hundred thirty-eight million, forty-seven thousand, one hundred seventy-two".