51065772 has 24 divisors (see below), whose sum is σ = 122374896. Its totient is φ = 16561728.

The previous prime is 51065767. The next prime is 51065779. The reversal of 51065772 is 27756015.

51065772 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 (51065779) 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, 57063 + ... + 57950.

It is an arithmetic number, because the mean of its divisors is an integer number (5098954).

Almost surely, 2^51065772 is an apocalyptic number.

It is an amenable number.

51065772 is an abundant number, since it is smaller than the sum of its proper divisors (71309124).

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

51065772 is a wasteful number, since it uses less digits than its factorization.

51065772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115057 (or 115055 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 51065772 is about 7146.0319058901. The cubic root of 51065772 is about 371.0023272958.

It can be divided in two parts, 5106 and 5772, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 51065772 in words is "fifty-one million, sixty-five thousand, seven hundred seventy-two".