117615281 has 8 divisors (see below), whose sum is σ = 134483904. Its totient is φ = 100763280.

The previous prime is 117615269. The next prime is 117615287. The reversal of 117615281 is 182516711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117615281 is a prime.

It is a super-2 number, since 2×117615281² = 27666708649417922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117615287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22031 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (16810488).

Almost surely, 2^117615281 is an apocalyptic number.

It is an amenable number.

117615281 is a deficient number, since it is larger than the sum of its proper divisors (16868623).

117615281 is an equidigital number, since it uses as much as digits as its factorization.

117615281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311.

The product of its digits is 3360, while the sum is 32.

The square root of 117615281 is about 10845.0579067149. The cubic root of 117615281 is about 489.9531830878.

The spelling of 117615281 in words is "one hundred seventeen million, six hundred fifteen thousand, two hundred eighty-one".