51486064 has 60 divisors (see below), whose sum is σ = 122898384. Its totient is φ = 20762112.

The previous prime is 51486053. The next prime is 51486073. The reversal of 51486064 is 46068415.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11397 + ... + 15259.

Almost surely, 2^51486064 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 51486064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61449192).

51486064 is an abundant number, since it is smaller than the sum of its proper divisors (71412320).

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

51486064 is a wasteful number, since it uses less digits than its factorization.

51486064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902 (or 3889 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 51486064 is about 7175.3790143797. The cubic root of 51486064 is about 372.0173807735.

The spelling of 51486064 in words is "fifty-one million, four hundred eighty-six thousand, sixty-four".