51410665 has 4 divisors (see below), whose sum is σ = 61692804. Its totient is φ = 41128528.

The previous prime is 51410651. The next prime is 51410677. The reversal of 51410665 is 56601415.

51410665 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 23785129 + 27625536 = 4877^2 + 5256^2 .

It is a cyclic number.

It is not a de Polignac number, because 51410665 - 2⁵ = 51410633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 5141062 + ... + 5141071.

It is an arithmetic number, because the mean of its divisors is an integer number (15423201).

Almost surely, 2^51410665 is an apocalyptic number.

It is an amenable number.

51410665 is a deficient number, since it is larger than the sum of its proper divisors (10282139).

51410665 is a wasteful number, since it uses less digits than its factorization.

51410665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10282138.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51410665 is about 7170.1230812309. The cubic root of 51410665 is about 371.8356912055.

The spelling of 51410665 in words is "fifty-one million, four hundred ten thousand, six hundred sixty-five".