117955261 has 4 divisors (see below), whose sum is σ = 118804000. Its totient is φ = 117106524.

The previous prime is 117955259. The next prime is 117955283. The reversal of 117955261 is 162559711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162559711 = 41 ⋅3964871.

It is a cyclic number.

It is not a de Polignac number, because 117955261 - 2¹ = 117955259 is a prime.

It is a super-3 number, since 3×117955261³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117955261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117955241) 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, 424161 + ... + 424438.

It is an arithmetic number, because the mean of its divisors is an integer number (29701000).

Almost surely, 2^117955261 is an apocalyptic number.

It is an amenable number.

117955261 is a deficient number, since it is larger than the sum of its proper divisors (848739).

117955261 is an equidigital number, since it uses as much as digits as its factorization.

117955261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848738.

The product of its digits is 18900, while the sum is 37.

The square root of 117955261 is about 10860.7210165808. The cubic root of 117955261 is about 490.4248169281.

The spelling of 117955261 in words is "one hundred seventeen million, nine hundred fifty-five thousand, two hundred sixty-one".