117172757 has 4 divisors (see below), whose sum is σ = 126186060. Its totient is φ = 108159456.

The previous prime is 117172733. The next prime is 117172813. The reversal of 117172757 is 757271711.

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 73427761 + 43744996 = 8569^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 117172757 - 2¹⁴ = 117156373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117172757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117172717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4506632 + ... + 4506657.

It is an arithmetic number, because the mean of its divisors is an integer number (31546515).

Almost surely, 2^117172757 is an apocalyptic number.

It is an amenable number.

117172757 is a deficient number, since it is larger than the sum of its proper divisors (9013303).

117172757 is an equidigital number, since it uses as much as digits as its factorization.

117172757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9013302.

The product of its digits is 24010, while the sum is 38.

The square root of 117172757 is about 10824.6365758856. The cubic root of 117172757 is about 489.3379327233.

The spelling of 117172757 in words is "one hundred seventeen million, one hundred seventy-two thousand, seven hundred fifty-seven".