51066880 has 48 divisors (see below), whose sum is σ = 122555160. Its totient is φ = 20422656.

The previous prime is 51066871. The next prime is 51066901. The reversal of 51066880 is 8866015.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7747 + ... + 12733.

Almost surely, 2^51066880 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 51066880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61277580).

51066880 is an abundant number, since it is smaller than the sum of its proper divisors (71488280).

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

51066880 is an equidigital number, since it uses as much as digits as its factorization.

51066880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 51066880 is about 7146.1094310121. The cubic root of 51066880 is about 371.0050105517.

The spelling of 51066880 in words is "fifty-one million, sixty-six thousand, eight hundred eighty".