51467839 has 2 divisors, whose sum is σ = 51467840. Its totient is φ = 51467838.

The previous prime is 51467831. The next prime is 51467849. The reversal of 51467839 is 93876415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51467839 - 2³ = 51467831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51467795 and 51467804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51467831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733919 + 25733920.

It is an arithmetic number, because the mean of its divisors is an integer number (25733920).

Almost surely, 2^51467839 is an apocalyptic number.

51467839 is a deficient number, since it is larger than the sum of its proper divisors (1).

51467839 is an equidigital number, since it uses as much as digits as its factorization.

51467839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 51467839 is about 7174.1089342162. The cubic root of 51467839 is about 371.9734801112.

The spelling of 51467839 in words is "fifty-one million, four hundred sixty-seven thousand, eight hundred thirty-nine".