51850172 has 24 divisors (see below), whose sum is σ = 101665200. Its totient is φ = 22930560.

The previous prime is 51850171. The next prime is 51850177. The reversal of 51850172 is 27105815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51850171) 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, 14297 + ... + 17552.

It is an arithmetic number, because the mean of its divisors is an integer number (4236050).

Almost surely, 2^51850172 is an apocalyptic number.

It is an amenable number.

51850172 is a deficient number, since it is larger than the sum of its proper divisors (49815028).

51850172 is a wasteful number, since it uses less digits than its factorization.

51850172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31901 (or 31899 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51850172 is about 7200.7063542405. The cubic root of 51850172 is about 372.8922870586.

Adding to 51850172 its reverse (27105815), we get a palindrome (78955987).

The spelling of 51850172 in words is "fifty-one million, eight hundred fifty thousand, one hundred seventy-two".