117255779 has 4 divisors (see below), whose sum is σ = 117851184. Its totient is φ = 116660376.

The previous prime is 117255773. The next prime is 117255781. The reversal of 117255779 is 977552711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977552711 = 97 ⋅10077863.

It is a cyclic number.

It is not a de Polignac number, because 117255779 - 2¹² = 117251683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117255773) 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, 297407 + ... + 297800.

It is an arithmetic number, because the mean of its divisors is an integer number (29462796).

Almost surely, 2^117255779 is an apocalyptic number.

117255779 is a deficient number, since it is larger than the sum of its proper divisors (595405).

117255779 is an equidigital number, since it uses as much as digits as its factorization.

117255779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595404.

The product of its digits is 154350, while the sum is 44.

The square root of 117255779 is about 10828.4707599919. The cubic root of 117255779 is about 489.4534778483.

The spelling of 117255779 in words is "one hundred seventeen million, two hundred fifty-five thousand, seven hundred seventy-nine".