117285757 has 2 divisors, whose sum is σ = 117285758. Its totient is φ = 117285756.

The previous prime is 117285743. The next prime is 117285769. The reversal of 117285757 is 757582711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107619876 + 9665881 = 10374^2 + 3109^2 .

It is an emirp because it is prime and its reverse (757582711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117285757 - 2⁷ = 117285629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117285457) 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 as a sum of consecutive naturals, namely, 58642878 + 58642879.

It is an arithmetic number, because the mean of its divisors is an integer number (58642879).

Almost surely, 2^117285757 is an apocalyptic number.

It is an amenable number.

117285757 is a deficient number, since it is larger than the sum of its proper divisors (1).

117285757 is an equidigital number, since it uses as much as digits as its factorization.

117285757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137200, while the sum is 43.

The square root of 117285757 is about 10829.8548928414. The cubic root of 117285757 is about 489.4951860587.

The spelling of 117285757 in words is "one hundred seventeen million, two hundred eighty-five thousand, seven hundred fifty-seven".