51346165 has 8 divisors (see below), whose sum is σ = 66355128. Its totient is φ = 37917120.

The previous prime is 51346159. The next prime is 51346181. The reversal of 51346165 is 56164315.

It can be written as a sum of positive squares in 4 ways, for example, as 1205604 + 50140561 = 1098^2 + 7081^2 .

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

It is not a de Polignac number, because 51346165 - 2³ = 51346157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394906 + ... + 395035.

It is an arithmetic number, because the mean of its divisors is an integer number (8294391).

Almost surely, 2^51346165 is an apocalyptic number.

It is an amenable number.

51346165 is a deficient number, since it is larger than the sum of its proper divisors (15008963).

51346165 is a wasteful number, since it uses less digits than its factorization.

51346165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789959.

The product of its digits is 10800, while the sum is 31.

The square root of 51346165 is about 7165.6238388573. The cubic root of 51346165 is about 371.6801240097.

The spelling of 51346165 in words is "fifty-one million, three hundred forty-six thousand, one hundred sixty-five".