51671165 has 64 divisors (see below), whose sum is σ = 82790400. Its totient is φ = 30046464.

The previous prime is 51671153. The next prime is 51671201. The reversal of 51671165 is 56117615.

51671165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51671165 - 2⁴ = 51671149 is a prime.

It is a congruent 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 63 ways as a sum of consecutive naturals, for example, 371666 + ... + 371804.

It is an arithmetic number, because the mean of its divisors is an integer number (1293600).

Almost surely, 2^51671165 is an apocalyptic number.

It is an amenable number.

51671165 is a deficient number, since it is larger than the sum of its proper divisors (31119235).

51671165 is a wasteful number, since it uses less digits than its factorization.

51671165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its digits is 6300, while the sum is 32.

The square root of 51671165 is about 7188.2657852920. The cubic root of 51671165 is about 372.4626691115.

The spelling of 51671165 in words is "fifty-one million, six hundred seventy-one thousand, one hundred sixty-five".