117800051 has 2 divisors, whose sum is σ = 117800052. Its totient is φ = 117800050.

The previous prime is 117800041. The next prime is 117800069. The reversal of 117800051 is 150008711.

It is a weak prime.

It is an emirp because it is prime and its reverse (150008711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117800051 - 2²⁶ = 50691187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (117800041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58900025 + 58900026.

It is an arithmetic number, because the mean of its divisors is an integer number (58900026).

Almost surely, 2^117800051 is an apocalyptic number.

117800051 is a deficient number, since it is larger than the sum of its proper divisors (1).

117800051 is an equidigital number, since it uses as much as digits as its factorization.

117800051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 117800051 is about 10853.5731904290. The cubic root of 117800051 is about 490.2096159942.

Adding to 117800051 its reverse (150008711), we get a palindrome (267808762).

The spelling of 117800051 in words is "one hundred seventeen million, eight hundred thousand, fifty-one".