51988608 has 192 divisors, whose sum is σ = 179071200. Its totient is φ = 14805504.

The previous prime is 51988537. The next prime is 51988613. The reversal of 51988608 is 80688915.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169191 + ... + 169497.

Almost surely, 2^51988608 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 51988608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89535600).

51988608 is an abundant number, since it is smaller than the sum of its proper divisors (127082592).

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

51988608 is a wasteful number, since it uses less digits than its factorization.

51988608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 51988608 is about 7210.3126145820. The cubic root of 51988608 is about 373.2238567890.

The spelling of 51988608 in words is "fifty-one million, nine hundred eighty-eight thousand, six hundred eight".