51715248 has 80 divisors (see below), whose sum is σ = 144990720. Its totient is φ = 15789312.

The previous prime is 51715231. The next prime is 51715249. The reversal of 51715248 is 84251715.

It is not an unprimeable number, because it can be changed into a prime (51715249) 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 15 ways as a sum of consecutive naturals, for example, 111465 + ... + 111927.

It is an arithmetic number, because the mean of its divisors is an integer number (1812384).

Almost surely, 2^51715248 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 51715248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72495360).

51715248 is an abundant number, since it is smaller than the sum of its proper divisors (93275472).

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

51715248 is a wasteful number, since it uses less digits than its factorization.

51715248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 660 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 51715248 is about 7191.3314483481. The cubic root of 51715248 is about 372.5685605677.

The spelling of 51715248 in words is "fifty-one million, seven hundred fifteen thousand, two hundred forty-eight".