51830784 has 168 divisors, whose sum is σ = 161864040. Its totient is φ = 15925248.

The previous prime is 51830783. The next prime is 51830789. The reversal of 51830784 is 48703815.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51830783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400814 + ... + 1400850.

Almost surely, 2^51830784 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 51830784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80932020).

51830784 is an abundant number, since it is smaller than the sum of its proper divisors (110033256).

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

51830784 is a wasteful number, since it uses less digits than its factorization.

51830784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 51830784 is about 7199.3599715530. The cubic root of 51830784 is about 372.8458035294.

The spelling of 51830784 in words is "fifty-one million, eight hundred thirty thousand, seven hundred eighty-four".