51486336 has 192 divisors, whose sum is σ = 171849600. Its totient is φ = 14622720.

The previous prime is 51486329. The next prime is 51486341. The reversal of 51486336 is 63368415.

51486336 is a `hidden beast` number, since 5 + 14 + 8 + 633 + 6 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51486336.

It is a congruent number.

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, 215305 + ... + 215543.

It is an arithmetic number, because the mean of its divisors is an integer number (895050).

Almost surely, 2^51486336 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 51486336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85924800).

51486336 is an abundant number, since it is smaller than the sum of its proper divisors (120363264).

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

51486336 is a wasteful number, since it uses less digits than its factorization.

51486336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 272 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 51486336 is about 7175.3979680572. The cubic root of 51486336 is about 372.0180358928.

The spelling of 51486336 in words is "fifty-one million, four hundred eighty-six thousand, three hundred thirty-six".