51800171 has 6 divisors (see below), whose sum is σ = 52734420. Its totient is φ = 50867856.

The previous prime is 51800167. The next prime is 51800191. The reversal of 51800171 is 17100815.

51800171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51800171 - 2² = 51800167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51800141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54815 + ... + 55751.

It is an arithmetic number, because the mean of its divisors is an integer number (8789070).

Almost surely, 2^51800171 is an apocalyptic number.

51800171 is a deficient number, since it is larger than the sum of its proper divisors (934249).

51800171 is an frugal number, since it uses more digits than its factorization.

51800171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 51800171 is about 7197.2335657529. The cubic root of 51800171 is about 372.7723839925.

Adding to 51800171 its reverse (17100815), we get a palindrome (68900986).

The spelling of 51800171 in words is "fifty-one million, eight hundred thousand, one hundred seventy-one".