117563161 has 4 divisors (see below), whose sum is σ = 120297232. Its totient is φ = 114829092.

The previous prime is 117563141. The next prime is 117563167. The reversal of 117563161 is 161365711.

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.

It is a de Polignac number, because none of the positive numbers 2^k-117563161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117563167) 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, 1366971 + ... + 1367056.

It is an arithmetic number, because the mean of its divisors is an integer number (30074308).

Almost surely, 2^117563161 is an apocalyptic number.

It is an amenable number.

117563161 is a deficient number, since it is larger than the sum of its proper divisors (2734071).

117563161 is an equidigital number, since it uses as much as digits as its factorization.

117563161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734070.

The product of its digits is 3780, while the sum is 31.

The square root of 117563161 is about 10842.6547026086. The cubic root of 117563161 is about 489.8807998264.

The spelling of 117563161 in words is "one hundred seventeen million, five hundred sixty-three thousand, one hundred sixty-one".