51903700172 has 12 divisors (see below), whose sum is σ = 90834293760. Its totient is φ = 25951044816.

The previous prime is 51903700171. The next prime is 51903700193. The reversal of 51903700172 is 27100730915.

It is a happy number.

51903700172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51903700171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42347 + ... + 324962.

It is an arithmetic number, because the mean of its divisors is an integer number (7569524480).

Almost surely, 2^51903700172 is an apocalyptic number.

It is an amenable number.

51903700172 is a deficient number, since it is larger than the sum of its proper divisors (38930593588).

51903700172 is a wasteful number, since it uses less digits than its factorization.

51903700172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402640 (or 402638 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 35.

The spelling of 51903700172 in words is "fifty-one billion, nine hundred three million, seven hundred thousand, one hundred seventy-two".