51468191 has 4 divisors (see below), whose sum is σ = 51489912. Its totient is φ = 51446472.

The previous prime is 51468143. The next prime is 51468229. The reversal of 51468191 is 19186415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51468191 - 2¹⁰ = 51467167 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 (51468101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800 + ... + 12213.

It is an arithmetic number, because the mean of its divisors is an integer number (12872478).

Almost surely, 2^51468191 is an apocalyptic number.

51468191 is a deficient number, since it is larger than the sum of its proper divisors (21721).

51468191 is a wasteful number, since it uses less digits than its factorization.

51468191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21720.

The product of its digits is 8640, while the sum is 35.

The square root of 51468191 is about 7174.1334668377. The cubic root of 51468191 is about 371.9743281124.

The spelling of 51468191 in words is "fifty-one million, four hundred sixty-eight thousand, one hundred ninety-one".