51867172 has 24 divisors (see below), whose sum is σ = 104005440. Its totient is φ = 22170720.

The previous prime is 51867149. The next prime is 51867191. The reversal of 51867172 is 27176815.

51867172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 13942.

It is an arithmetic number, because the mean of its divisors is an integer number (4333560).

Almost surely, 2^51867172 is an apocalyptic number.

It is an amenable number.

51867172 is an abundant number, since it is smaller than the sum of its proper divisors (52138268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51867172 is a wasteful number, since it uses less digits than its factorization.

51867172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4849 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 51867172 is about 7201.8866972482. The cubic root of 51867172 is about 372.9330357258.

The spelling of 51867172 in words is "fifty-one million, eight hundred sixty-seven thousand, one hundred seventy-two".