117257117 has 4 divisors (see below), whose sum is σ = 117383196. Its totient is φ = 117131040.

The previous prime is 117257111. The next prime is 117257137. The reversal of 117257117 is 711752711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711752711 = 19 ⋅37460669.

It can be written as a sum of positive squares in 2 ways, for example, as 29441476 + 87815641 = 5426^2 + 9371^2 .

It is a cyclic number.

It is not a de Polignac number, because 117257117 - 2⁸ = 117256861 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 (117257111) 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, 61634 + ... + 63507.

It is an arithmetic number, because the mean of its divisors is an integer number (29345799).

Almost surely, 2^117257117 is an apocalyptic number.

It is an amenable number.

117257117 is a deficient number, since it is larger than the sum of its proper divisors (126079).

117257117 is an equidigital number, since it uses as much as digits as its factorization.

117257117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126078.

The product of its digits is 3430, while the sum is 32.

The square root of 117257117 is about 10828.5325413927. The cubic root of 117257117 is about 489.4553395512.

The spelling of 117257117 in words is "one hundred seventeen million, two hundred fifty-seven thousand, one hundred seventeen".