51776776 has 8 divisors (see below), whose sum is σ = 97081470. Its totient is φ = 25888384.

The previous prime is 51776771. The next prime is 51776819. The reversal of 51776776 is 67767715.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 18714276 = 5750^2 + 4326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51776771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3236041 + ... + 3236056.

Almost surely, 2^51776776 is an apocalyptic number.

It is an amenable number.

51776776 is a deficient number, since it is larger than the sum of its proper divisors (45304694).

51776776 is a wasteful number, since it uses less digits than its factorization.

51776776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472103 (or 6472099 counting only the distinct ones).

The product of its digits is 432180, while the sum is 46.

The square root of 51776776 is about 7195.6081049485. The cubic root of 51776776 is about 372.7162559720.

The spelling of 51776776 in words is "fifty-one million, seven hundred seventy-six thousand, seven hundred seventy-six".