51165165 has 8 divisors (see below), whose sum is σ = 81864288. Its totient is φ = 27288080.

The previous prime is 51165113. The next prime is 51165167. The reversal of 51165165 is 56156115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51165165 - 2⁹ = 51164653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51165167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1705491 + ... + 1705520.

It is an arithmetic number, because the mean of its divisors is an integer number (10233036).

Almost surely, 2^51165165 is an apocalyptic number.

It is an amenable number.

51165165 is a deficient number, since it is larger than the sum of its proper divisors (30699123).

51165165 is a wasteful number, since it uses less digits than its factorization.

51165165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411019.

The product of its digits is 4500, while the sum is 30.

The square root of 51165165 is about 7152.9829441989. The cubic root of 51165165 is about 371.2428741731.

The spelling of 51165165 in words is "fifty-one million, one hundred sixty-five thousand, one hundred sixty-five".