51559165 has 16 divisors (see below), whose sum is σ = 71003520. Its totient is φ = 35208000.

The previous prime is 51559159. The next prime is 51559199. The reversal of 51559165 is 56195515.

It is a happy number.

It is not a de Polignac number, because 51559165 - 2⁵ = 51559133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5851 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (4437720).

Almost surely, 2^51559165 is an apocalyptic number.

It is an amenable number.

51559165 is a deficient number, since it is larger than the sum of its proper divisors (19444355).

51559165 is a wasteful number, since it uses less digits than its factorization.

51559165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132.

The product of its digits is 33750, while the sum is 37.

The square root of 51559165 is about 7180.4710848244. The cubic root of 51559165 is about 372.1933635539.

The spelling of 51559165 in words is "fifty-one million, five hundred fifty-nine thousand, one hundred sixty-five".