51081767 has 8 divisors (see below), whose sum is σ = 56039040. Its totient is φ = 46176760.

The previous prime is 51081743. The next prime is 51081773. The reversal of 51081767 is 76718015.

51081767 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51081767 - 2⁶ = 51081703 is a prime.

It is a super-3 number, since 3×51081767³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51081727) 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, 11003 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (7004880).

Almost surely, 2^51081767 is an apocalyptic number.

51081767 is a deficient number, since it is larger than the sum of its proper divisors (4957273).

51081767 is a wasteful number, since it uses less digits than its factorization.

51081767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26133.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 51081767 is about 7147.1509708415. The cubic root of 51081767 is about 371.0410588018.

The spelling of 51081767 in words is "fifty-one million, eighty-one thousand, seven hundred sixty-seven".