51234165 has 48 divisors (see below), whose sum is σ = 96545280. Its totient is φ = 25038720.

The previous prime is 51234151. The next prime is 51234167. The reversal of 51234165 is 56143215.

It is not a de Polignac number, because 51234165 - 2⁸ = 51233909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234167) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25539 + ... + 27471.

It is an arithmetic number, because the mean of its divisors is an integer number (2011360).

Almost surely, 2^51234165 is an apocalyptic number.

It is an amenable number.

51234165 is a deficient number, since it is larger than the sum of its proper divisors (45311115).

51234165 is a wasteful number, since it uses less digits than its factorization.

51234165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1991 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51234165 is about 7157.8044818226. The cubic root of 51234165 is about 371.4096820135.

The spelling of 51234165 in words is "fifty-one million, two hundred thirty-four thousand, one hundred sixty-five".