51851760 has 160 divisors (see below), whose sum is σ = 172488960. Its totient is φ = 12847104.

The previous prime is 51851753. The next prime is 51851801. The reversal of 51851760 is 6715815.

51851760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 378412 + ... + 378548.

It is an arithmetic number, because the mean of its divisors is an integer number (1078056).

Almost surely, 2^51851760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51851760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86244480).

51851760 is an abundant number, since it is smaller than the sum of its proper divisors (120637200).

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

51851760 is a wasteful number, since it uses less digits than its factorization.

51851760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 51851760 is about 7200.8166203563. The cubic root of 51851760 is about 372.8960938406.

The spelling of 51851760 in words is "fifty-one million, eight hundred fifty-one thousand, seven hundred sixty".