51268788 has 60 divisors (see below), whose sum is σ = 135791040. Its totient is φ = 16864848.

The previous prime is 51268769. The next prime is 51268813. The reversal of 51268788 is 88786215.

51268788 is a `hidden beast` number, since 512 + 68 + 78 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24595 + ... + 26597.

It is an arithmetic number, because the mean of its divisors is an integer number (2263184).

Almost surely, 2^51268788 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 51268788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67895520).

51268788 is an abundant number, since it is smaller than the sum of its proper divisors (84522252).

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

51268788 is a wasteful number, since it uses less digits than its factorization.

51268788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2087 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 51268788 is about 7160.2226222374. Note that the first 3 decimals coincide. The cubic root of 51268788 is about 371.4933268614.

The spelling of 51268788 in words is "fifty-one million, two hundred sixty-eight thousand, seven hundred eighty-eight".