51783360 has 224 divisors, whose sum is σ = 184343040. Its totient is φ = 12238848.

The previous prime is 51783359. The next prime is 51783367. The reversal of 51783360 is 6338715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51783367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309997 + ... + 310163.

It is an arithmetic number, because the mean of its divisors is an integer number (822960).

Almost surely, 2^51783360 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 51783360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92171520).

51783360 is an abundant number, since it is smaller than the sum of its proper divisors (132559680).

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

51783360 is a wasteful number, since it uses less digits than its factorization.

51783360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 51783360 is about 7196.0655916966. The cubic root of 51783360 is about 372.7320536585.

The spelling of 51783360 in words is "fifty-one million, seven hundred eighty-three thousand, three hundred sixty".