51083780 has 96 divisors (see below), whose sum is σ = 125435520. Its totient is φ = 17424000.

The previous prime is 51083743. The next prime is 51083807. The reversal of 51083780 is 8738015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505730 + ... + 505830.

It is an arithmetic number, because the mean of its divisors is an integer number (1306620).

Almost surely, 2^51083780 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 51083780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62717760).

51083780 is an abundant number, since it is smaller than the sum of its proper divisors (74351740).

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

51083780 is a wasteful number, since it uses less digits than its factorization.

51083780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 51083780 is about 7147.2917947989. The cubic root of 51083780 is about 371.0459326598.

It can be divided in two parts, 5108 and 3780, that added together give a palindrome (8888).

The spelling of 51083780 in words is "fifty-one million, eighty-three thousand, seven hundred eighty".