51888726 has 48 divisors (see below), whose sum is σ = 122282784. Its totient is φ = 15835392.

The previous prime is 51888719. The next prime is 51888731. The reversal of 51888726 is 62788815.

51888726 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 23 ways as a sum of consecutive naturals, for example, 9031 + ... + 13613.

It is an arithmetic number, because the mean of its divisors is an integer number (2547558).

Almost surely, 2^51888726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51888726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61141392).

51888726 is an abundant number, since it is smaller than the sum of its proper divisors (70394058).

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

51888726 is a wasteful number, since it uses less digits than its factorization.

51888726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645 (or 4642 counting only the distinct ones).

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

The square root of 51888726 is about 7203.3829552510. The cubic root of 51888726 is about 372.9846874427.

The spelling of 51888726 in words is "fifty-one million, eight hundred eighty-eight thousand, seven hundred twenty-six".