51250172 has 12 divisors (see below), whose sum is σ = 94963680. Its totient is φ = 24117696.

The previous prime is 51250159. The next prime is 51250181. The reversal of 51250172 is 27105215.

It is a happy number.

51250172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 376772 + ... + 376907.

It is an arithmetic number, because the mean of its divisors is an integer number (7913640).

Almost surely, 2^51250172 is an apocalyptic number.

It is an amenable number.

51250172 is a deficient number, since it is larger than the sum of its proper divisors (43713508).

51250172 is a wasteful number, since it uses less digits than its factorization.

51250172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753700 (or 753698 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51250172 is about 7158.9225446292. The cubic root of 51250172 is about 371.4483576104.

Adding to 51250172 its reverse (27105215), we get a palindrome (78355387).

The spelling of 51250172 in words is "fifty-one million, two hundred fifty thousand, one hundred seventy-two".