51171199 has 8 divisors (see below), whose sum is σ = 53933040. Its totient is φ = 48416256.

The previous prime is 51171193. The next prime is 51171229. The reversal of 51171199 is 99117115.

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

It is not a de Polignac number, because 51171199 - 2⁹ = 51170687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51171193) 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 7 ways as a sum of consecutive naturals, for example, 22017 + ... + 24229.

It is an arithmetic number, because the mean of its divisors is an integer number (6741630).

Almost surely, 2^51171199 is an apocalyptic number.

51171199 is a deficient number, since it is larger than the sum of its proper divisors (2761841).

51171199 is a wasteful number, since it uses less digits than its factorization.

51171199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449.

The product of its digits is 2835, while the sum is 34.

The square root of 51171199 is about 7153.4047138408. The cubic root of 51171199 is about 371.2574673796.

The spelling of 51171199 in words is "fifty-one million, one hundred seventy-one thousand, one hundred ninety-nine".