51881696 has 48 divisors (see below), whose sum is σ = 108591840. Its totient is φ = 24353280.

The previous prime is 51881677. The next prime is 51881699. The reversal of 51881696 is 69618815.

51881696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51881699) 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, 33581 + ... + 35091.

It is an arithmetic number, because the mean of its divisors is an integer number (2262330).

Almost surely, 2^51881696 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 51881696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54295920).

51881696 is an abundant number, since it is smaller than the sum of its proper divisors (56710144).

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

51881696 is a wasteful number, since it uses less digits than its factorization.

51881696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1579 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 51881696 is about 7202.8949735506. The cubic root of 51881696 is about 372.9678424169.

The spelling of 51881696 in words is "fifty-one million, eight hundred eighty-one thousand, six hundred ninety-six".