51787368 has 96 divisors (see below), whose sum is σ = 145454400. Its totient is φ = 16637184.

The previous prime is 51787363. The next prime is 51787381. The reversal of 51787368 is 86378715.

51787368 is a `hidden beast` number, since 517 + 8 + 73 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (51787363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310021 + ... + 310187.

It is an arithmetic number, because the mean of its divisors is an integer number (1515150).

Almost surely, 2^51787368 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 51787368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72727200).

51787368 is an abundant number, since it is smaller than the sum of its proper divisors (93667032).

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

51787368 is a wasteful number, since it uses less digits than its factorization.

51787368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 304 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 51787368 is about 7196.3440718187. The cubic root of 51787368 is about 372.7416698205.

The spelling of 51787368 in words is "fifty-one million, seven hundred eighty-seven thousand, three hundred sixty-eight".