51165441 has 6 divisors (see below), whose sum is σ = 73905650. Its totient is φ = 34110288.

The previous prime is 51165391. The next prime is 51165467. The reversal of 51165441 is 14456115.

51165441 is a `hidden beast` number, since 5 + 1 + 1 + 654 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 1166400 = 7071^2 + 1080^2 .

It is not a de Polignac number, because 51165441 - 2¹⁰ = 51164417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51165341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2842516 + ... + 2842533.

Almost surely, 2^51165441 is an apocalyptic number.

It is an amenable number.

51165441 is a deficient number, since it is larger than the sum of its proper divisors (22740209).

51165441 is a wasteful number, since it uses less digits than its factorization.

51165441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685055 (or 5685052 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 51165441 is about 7153.0022368234. The cubic root of 51165441 is about 371.2435417031.

The spelling of 51165441 in words is "fifty-one million, one hundred sixty-five thousand, four hundred forty-one".