51248704 has 56 divisors (see below), whose sum is σ = 113109248. Its totient is φ = 22878720.

The previous prime is 51248677. The next prime is 51248707. The reversal of 51248704 is 40784215.

51248704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (51248707) 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, 24799 + ... + 26785.

It is an arithmetic number, because the mean of its divisors is an integer number (2019808).

Almost surely, 2^51248704 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 51248704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56554624).

51248704 is an abundant number, since it is smaller than the sum of its proper divisors (61860544).

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

51248704 is a wasteful number, since it uses less digits than its factorization.

51248704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 51248704 is about 7158.8200144996. The cubic root of 51248704 is about 371.4448110116. Note that the first 3 decimals are identical.

The spelling of 51248704 in words is "fifty-one million, two hundred forty-eight thousand, seven hundred four".