51646848 has 64 divisors (see below), whose sum is σ = 149670720. Its totient is φ = 15649280.

The previous prime is 51646841. The next prime is 51646871. The reversal of 51646848 is 84864615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51646841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 10337.

It is an arithmetic number, because the mean of its divisors is an integer number (2338605).

Almost surely, 2^51646848 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 51646848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74835360).

51646848 is an abundant number, since it is smaller than the sum of its proper divisors (98023872).

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

51646848 is a wasteful number, since it uses less digits than its factorization.

51646848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12255 (or 12243 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 51646848 is about 7186.5741490644. The cubic root of 51646848 is about 372.4042316452.

The spelling of 51646848 in words is "fifty-one million, six hundred forty-six thousand, eight hundred forty-eight".