51476665 has 8 divisors (see below), whose sum is σ = 61829640. Its totient is φ = 41142912.

The previous prime is 51476627. The next prime is 51476699. The reversal of 51476665 is 56667415.

51476665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10106041 + 41370624 = 3179^2 + 6432^2 .

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 51476665 - 2²¹ = 49379513 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1957 + ... + 10333.

It is an arithmetic number, because the mean of its divisors is an integer number (7728705).

Almost surely, 2^51476665 is an apocalyptic number.

It is an amenable number.

51476665 is a deficient number, since it is larger than the sum of its proper divisors (10352975).

51476665 is a wasteful number, since it uses less digits than its factorization.

51476665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its digits is 151200, while the sum is 40.

The square root of 51476665 is about 7174.7240365048. The cubic root of 51476665 is about 371.9947416106.

The spelling of 51476665 in words is "fifty-one million, four hundred seventy-six thousand, six hundred sixty-five".