117081757 has 4 divisors (see below), whose sum is σ = 126088060. Its totient is φ = 108075456.

The previous prime is 117081751. The next prime is 117081779. The reversal of 117081757 is 757180711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 757180711 = 7 ⋅108168673.

It can be written as a sum of positive squares in 2 ways, for example, as 25190361 + 91891396 = 5019^2 + 9586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117081757 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 (117081751) 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, 4503132 + ... + 4503157.

It is an arithmetic number, because the mean of its divisors is an integer number (31522015).

Almost surely, 2^117081757 is an apocalyptic number.

It is an amenable number.

117081757 is a deficient number, since it is larger than the sum of its proper divisors (9006303).

117081757 is an equidigital number, since it uses as much as digits as its factorization.

117081757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006302.

The product of its (nonzero) digits is 13720, while the sum is 37.

The square root of 117081757 is about 10820.4323850759. The cubic root of 117081757 is about 489.2112215727.

The spelling of 117081757 in words is "one hundred seventeen million, eighty-one thousand, seven hundred fifty-seven".