51412165 has 32 divisors (see below), whose sum is σ = 75769344. Its totient is φ = 32686080.

The previous prime is 51412147. The next prime is 51412171. The reversal of 51412165 is 56121415.

It is a happy number.

It is not a de Polignac number, because 51412165 - 2⁹ = 51411653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41637 + ... + 42853.

It is an arithmetic number, because the mean of its divisors is an integer number (2367792).

Almost surely, 2^51412165 is an apocalyptic number.

It is an amenable number.

51412165 is a deficient number, since it is larger than the sum of its proper divisors (24357179).

51412165 is a wasteful number, since it uses less digits than its factorization.

51412165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its digits is 1200, while the sum is 25.

The square root of 51412165 is about 7170.2276811828. The cubic root of 51412165 is about 371.8393074987.

The spelling of 51412165 in words is "fifty-one million, four hundred twelve thousand, one hundred sixty-five".