51895161 has 20 divisors (see below), whose sum is σ = 78843600. Its totient is φ = 34007256.

The previous prime is 51895141. The next prime is 51895163. The reversal of 51895161 is 16159815.

It is not a de Polignac number, because 51895161 - 2¹⁸ = 51633017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51895163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 651 + ... + 10208.

It is an arithmetic number, because the mean of its divisors is an integer number (3942180).

Almost surely, 2^51895161 is an apocalyptic number.

It is an amenable number.

51895161 is a deficient number, since it is larger than the sum of its proper divisors (26948439).

51895161 is a wasteful number, since it uses less digits than its factorization.

51895161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10930 (or 10921 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 51895161 is about 7203.8296065357. The cubic root of 51895161 is about 373.0001054177. Note that the first 3 decimals are identical.

The spelling of 51895161 in words is "fifty-one million, eight hundred ninety-five thousand, one hundred sixty-one".