51065161 has 8 divisors (see below), whose sum is σ = 61793280. Its totient is φ = 41195328.

The previous prime is 51065137. The next prime is 51065173. The reversal of 51065161 is 16156015.

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 51065161 - 2⁹ = 51064649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51065111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214441 + ... + 214678.

It is an arithmetic number, because the mean of its divisors is an integer number (7724160).

Almost surely, 2^51065161 is an apocalyptic number.

It is an amenable number.

51065161 is a deficient number, since it is larger than the sum of its proper divisors (10728119).

51065161 is a wasteful number, since it uses less digits than its factorization.

51065161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429143.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 51065161 is about 7145.9891547637. The cubic root of 51065161 is about 371.0008476137. Note that the first 3 decimals are identical.

The spelling of 51065161 in words is "fifty-one million, sixty-five thousand, one hundred sixty-one".