51836480 has 56 divisors (see below), whose sum is σ = 128820672. Its totient is φ = 19830272.

The previous prime is 51836459. The next prime is 51836483. The reversal of 51836480 is 8463815.

It is a self number, because there is not a number n which added to its sum of digits gives 51836480.

It is not an unprimeable number, because it can be changed into a prime (51836483) 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, 3839 + ... + 10881.

Almost surely, 2^51836480 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 51836480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64410336).

51836480 is an abundant number, since it is smaller than the sum of its proper divisors (76984192).

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

51836480 is a wasteful number, since it uses less digits than its factorization.

51836480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083 (or 7073 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 51836480 is about 7199.7555514059. The cubic root of 51836480 is about 372.8594611265.

The spelling of 51836480 in words is "fifty-one million, eight hundred thirty-six thousand, four hundred eighty".