51776773 has 8 divisors (see below), whose sum is σ = 53163968. Its totient is φ = 50397984.

The previous prime is 51776771. The next prime is 51776819. The reversal of 51776773 is 37767715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51776773 - 2¹ = 51776771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 11536 + ... + 15382.

It is an arithmetic number, because the mean of its divisors is an integer number (6645496).

Almost surely, 2^51776773 is an apocalyptic number.

It is an amenable number.

51776773 is a deficient number, since it is larger than the sum of its proper divisors (1387195).

51776773 is a wasteful number, since it uses less digits than its factorization.

51776773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203.

The product of its digits is 216090, while the sum is 43.

The square root of 51776773 is about 7195.6078964880. The cubic root of 51776773 is about 372.7162487735.

The spelling of 51776773 in words is "fifty-one million, seven hundred seventy-six thousand, seven hundred seventy-three".