51980764 has 24 divisors (see below), whose sum is σ = 105074928. Its totient is φ = 22237440.

The previous prime is 51980729. The next prime is 51980771. The reversal of 51980764 is 46708915.

51980764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 33999 + ... + 35494.

It is an arithmetic number, because the mean of its divisors is an integer number (4378122).

Almost surely, 2^51980764 is an apocalyptic number.

It is an amenable number.

51980764 is an abundant number, since it is smaller than the sum of its proper divisors (53094164).

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

51980764 is a wasteful number, since it uses less digits than its factorization.

51980764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69525 (or 69523 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 51980764 is about 7209.7686509346. The cubic root of 51980764 is about 373.2050852716.

The spelling of 51980764 in words is "fifty-one million, nine hundred eighty thousand, seven hundred sixty-four".