117513855 has 32 divisors (see below), whose sum is σ = 209361600. Its totient is φ = 62539776.

The previous prime is 117513821. The next prime is 117513857. The reversal of 117513855 is 558315711.

It is not a de Polignac number, because 117513855 - 2⁶ = 117513791 is a prime.

It is a super-2 number, since 2×117513855² = 27619012233922050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117513857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124947 + ... + 125883.

It is an arithmetic number, because the mean of its divisors is an integer number (6542550).

Almost surely, 2^117513855 is an apocalyptic number.

117513855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

117513855 is a deficient number, since it is larger than the sum of its proper divisors (91847745).

117513855 is an equidigital number, since it uses as much as digits as its factorization.

117513855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1874 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

The square root of 117513855 is about 10840.3807589955. The cubic root of 117513855 is about 489.8123048998.

The spelling of 117513855 in words is "one hundred seventeen million, five hundred thirteen thousand, eight hundred fifty-five".