117538173 has 6 divisors (see below), whose sum is σ = 169777374. Its totient is φ = 78358776.

The previous prime is 117538163. The next prime is 117538181. The reversal of 117538173 is 371835711.

It is a happy number.

117538173 is a `hidden beast` number, since 117 + 538 + 1 + 7 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78375609 + 39162564 = 8853^2 + 6258^2 .

It is not a de Polignac number, because 117538173 - 2⁹ = 117537661 is a prime.

It is a super-2 number, since 2×117538173² = 27630444224355858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117538163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6529890 + ... + 6529907.

It is an arithmetic number, because the mean of its divisors is an integer number (28296229).

Almost surely, 2^117538173 is an apocalyptic number.

It is an amenable number.

117538173 is a deficient number, since it is larger than the sum of its proper divisors (52239201).

117538173 is a wasteful number, since it uses less digits than its factorization.

117538173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13059803 (or 13059800 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 117538173 is about 10841.5023405430. The cubic root of 117538173 is about 489.8460893816.

It can be divided in two parts, 117538 and 173, that added together give a palindrome (117711).

The spelling of 117538173 in words is "one hundred seventeen million, five hundred thirty-eight thousand, one hundred seventy-three".