51330944 has 64 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 21603840.

The previous prime is 51330943. The next prime is 51330959. The reversal of 51330944 is 44903315.

51330944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×51330944² = 5269731623862272, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 52379 + ... + 53349.

It is an arithmetic number, because the mean of its divisors is an integer number (1858950).

Almost surely, 2^51330944 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 51330944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59486400).

51330944 is an abundant number, since it is smaller than the sum of its proper divisors (67641856).

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

51330944 is an equidigital number, since it uses as much as digits as its factorization.

51330944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 51330944 is about 7164.5616753574. The cubic root of 51330944 is about 371.6433935660.

The spelling of 51330944 in words is "fifty-one million, three hundred thirty thousand, nine hundred forty-four".