51807776 has 48 divisors (see below), whose sum is σ = 108972864. Its totient is φ = 24186624.

The previous prime is 51807773. The next prime is 51807779. The reversal of 51807776 is 67770815.

It is an interprime number because it is at equal distance from previous prime (51807773) and next prime (51807779).

It is not an unprimeable number, because it can be changed into a prime (51807773) 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, 30830 + ... + 32466.

It is an arithmetic number, because the mean of its divisors is an integer number (2270268).

Almost surely, 2^51807776 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 51807776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54486432).

51807776 is an abundant number, since it is smaller than the sum of its proper divisors (57165088).

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

51807776 is a wasteful number, since it uses less digits than its factorization.

51807776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 51807776 is about 7197.7618743607. The cubic root of 51807776 is about 372.7906258580.

The spelling of 51807776 in words is "fifty-one million, eight hundred seven thousand, seven hundred seventy-six".