51180769 has 4 divisors (see below), whose sum is σ = 52019860. Its totient is φ = 50341680.

The previous prime is 51180763. The next prime is 51180809. The reversal of 51180769 is 96708115.

51180769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 42419169 = 2960^2 + 6513^2 .

It is a cyclic number.

It is not a de Polignac number, because 51180769 - 2¹⁷ = 51049697 is a prime.

It is a super-2 number, since 2×51180769² = 5238942230862722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51180763) 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 3 ways as a sum of consecutive naturals, for example, 419454 + ... + 419575.

It is an arithmetic number, because the mean of its divisors is an integer number (13004965).

Almost surely, 2^51180769 is an apocalyptic number.

It is an amenable number.

51180769 is a deficient number, since it is larger than the sum of its proper divisors (839091).

51180769 is an equidigital number, since it uses as much as digits as its factorization.

51180769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839090.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 51180769 is about 7154.0735948130. The cubic root of 51180769 is about 371.2806100364.

The spelling of 51180769 in words is "fifty-one million, one hundred eighty thousand, seven hundred sixty-nine".