51171065 has 16 divisors (see below), whose sum is σ = 67841280. Its totient is φ = 36741120.

The previous prime is 51171019. The next prime is 51171073. The reversal of 51171065 is 56017115.

It is not a de Polignac number, because 51171065 - 2⁸ = 51170809 is a prime.

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, 1544 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (4240080).

Almost surely, 2^51171065 is an apocalyptic number.

51171065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51171065 is a deficient number, since it is larger than the sum of its proper divisors (16670215).

51171065 is a wasteful number, since it uses less digits than its factorization.

51171065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11872.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 51171065 is about 7153.3953476653. The cubic root of 51171065 is about 371.2571433135.

The spelling of 51171065 in words is "fifty-one million, one hundred seventy-one thousand, sixty-five".