117288901 has 4 divisors (see below), whose sum is σ = 117314892. Its totient is φ = 117262912.

The previous prime is 117288887. The next prime is 117288929. The reversal of 117288901 is 109882711.

It is a Cunningham number, because it is equal to 10830²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81468676 + 35820225 = 9026^2 + 5985^2 .

It is a cyclic number.

It is not a de Polignac number, because 117288901 - 2⁵ = 117288869 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 (117288961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4276 + ... + 15901.

It is an arithmetic number, because the mean of its divisors is an integer number (29328723).

Almost surely, 2^117288901 is an apocalyptic number.

It is an amenable number.

117288901 is a deficient number, since it is larger than the sum of its proper divisors (25991).

117288901 is an equidigital number, since it uses as much as digits as its factorization.

117288901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 117288901 is about 10830.0000461681. Note that the first 4 decimals coincide. The cubic root of 117288901 is about 489.4995598751.

The spelling of 117288901 in words is "one hundred seventeen million, two hundred eighty-eight thousand, nine hundred one".