117520289 has 4 divisors (see below), whose sum is σ = 117585300. Its totient is φ = 117455280.

The previous prime is 117520283. The next prime is 117520327. The reversal of 117520289 is 982025711.

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 9048064 + 108472225 = 3008^2 + 10415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117520289 is a prime.

It is a super-2 number, since 2×117520289² = 27622036653287042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117520283) 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, 29714 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (29396325).

Almost surely, 2^117520289 is an apocalyptic number.

It is an amenable number.

117520289 is a deficient number, since it is larger than the sum of its proper divisors (65011).

117520289 is an equidigital number, since it uses as much as digits as its factorization.

117520289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65010.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 117520289 is about 10840.6775157275. The cubic root of 117520289 is about 489.8212439730.

The spelling of 117520289 in words is "one hundred seventeen million, five hundred twenty thousand, two hundred eighty-nine".