51288064 has 48 divisors (see below), whose sum is σ = 104176800. Its totient is φ = 25239552.

The previous prime is 51288053. The next prime is 51288073. The reversal of 51288064 is 46088215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161634 + ... + 161950.

It is an arithmetic number, because the mean of its divisors is an integer number (2170350).

Almost surely, 2^51288064 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 51288064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52088400).

51288064 is an abundant number, since it is smaller than the sum of its proper divisors (52888736).

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

51288064 is an equidigital number, since it uses as much as digits as its factorization.

51288064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51288064 is about 7161.5685432732. The cubic root of 51288064 is about 371.5398789540.

The spelling of 51288064 in words is "fifty-one million, two hundred eighty-eight thousand, sixty-four".