51334720 has 56 divisors (see below), whose sum is σ = 124358400. Its totient is φ = 20178432.

The previous prime is 51334697. The next prime is 51334721. The reversal of 51334720 is 2743315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51334721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17521 + ... + 20239.

Almost surely, 2^51334720 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 51334720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62179200).

51334720 is an abundant number, since it is smaller than the sum of its proper divisors (73023680).

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

51334720 is a wasteful number, since it uses less digits than its factorization.

51334720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 51334720 is about 7164.8251897726. The cubic root of 51334720 is about 371.6525062696.

The spelling of 51334720 in words is "fifty-one million, three hundred thirty-four thousand, seven hundred twenty".