117155520 has 168 divisors, whose sum is σ = 424373040. Its totient is φ = 29583360.

The previous prime is 117155509. The next prime is 117155531. The reversal of 117155520 is 25551711.

It is an interprime number because it is at equal distance from previous prime (117155509) and next prime (117155531).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53650 + ... + 55790.

It is an arithmetic number, because the mean of its divisors is an integer number (2526030).

Almost surely, 2^117155520 is an apocalyptic number.

117155520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212186520).

117155520 is an abundant number, since it is smaller than the sum of its proper divisors (307217520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117155520 is a wasteful number, since it uses less digits than its factorization.

117155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2170 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 117155520 is about 10823.8403535898. The cubic root of 117155520 is about 489.3139364412.

The spelling of 117155520 in words is "one hundred seventeen million, one hundred fifty-five thousand, five hundred twenty".