51072896 has 96 divisors (see below), whose sum is σ = 125582400. Its totient is φ = 20557824.

The previous prime is 51072877. The next prime is 51072899. The reversal of 51072896 is 69827015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51072899) 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 11 ways as a sum of consecutive naturals, for example, 106385 + ... + 106863.

It is an arithmetic number, because the mean of its divisors is an integer number (1308150).

Almost surely, 2^51072896 is an apocalyptic number.

51072896 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51072896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62791200).

51072896 is an abundant number, since it is smaller than the sum of its proper divisors (74509504).

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

51072896 is a wasteful number, since it uses less digits than its factorization.

51072896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 51072896 is about 7146.5303469586. The cubic root of 51072896 is about 371.0195788884.

The spelling of 51072896 in words is "fifty-one million, seventy-two thousand, eight hundred ninety-six".