51335980 has 24 divisors (see below), whose sum is σ = 110314512. Its totient is φ = 20056512.

The previous prime is 51335957. The next prime is 51335981. The reversal of 51335980 is 8953315.

51335980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51335981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28987 + ... + 30706.

It is an arithmetic number, because the mean of its divisors is an integer number (4596438).

Almost surely, 2^51335980 is an apocalyptic number.

It is an amenable number.

51335980 is an abundant number, since it is smaller than the sum of its proper divisors (58978532).

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

51335980 is a wasteful number, since it uses less digits than its factorization.

51335980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59745 (or 59743 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 51335980 is about 7164.9131188033. The cubic root of 51335980 is about 371.6555469558.

The spelling of 51335980 in words is "fifty-one million, three hundred thirty-five thousand, nine hundred eighty".