51957888 has 64 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 17220608.

The previous prime is 51957887. The next prime is 51957901. The reversal of 51957888 is 88875915.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51957888.

It is not an unprimeable number, because it can be changed into a prime (51957881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103045 + ... + 103547.

It is an arithmetic number, because the mean of its divisors is an integer number (2168775).

Almost surely, 2^51957888 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 51957888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69400800).

51957888 is an abundant number, since it is smaller than the sum of its proper divisors (86843712).

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

51957888 is a wasteful number, since it uses less digits than its factorization.

51957888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 777 counting only the distinct ones).

The product of its digits is 806400, while the sum is 51.

The square root of 51957888 is about 7208.1820176796. The cubic root of 51957888 is about 373.1503298097.

The spelling of 51957888 in words is "fifty-one million, nine hundred fifty-seven thousand, eight hundred eighty-eight".