117047285 has 4 divisors (see below), whose sum is σ = 140456748. Its totient is φ = 93637824.

The previous prime is 117047279. The next prime is 117047291. The reversal of 117047285 is 582740711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582740711 = 7 ⋅83248673.

It is an interprime number because it is at equal distance from previous prime (117047279) and next prime (117047291).

It can be written as a sum of positive squares in 2 ways, for example, as 47458321 + 69588964 = 6889^2 + 8342^2 .

It is a cyclic number.

It is not a de Polignac number, because 117047285 - 2⁶ = 117047221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11704724 + ... + 11704733.

It is an arithmetic number, because the mean of its divisors is an integer number (35114187).

Almost surely, 2^117047285 is an apocalyptic number.

It is an amenable number.

117047285 is a deficient number, since it is larger than the sum of its proper divisors (23409463).

117047285 is an equidigital number, since it uses as much as digits as its factorization.

117047285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23409462.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 117047285 is about 10818.8393554947. The cubic root of 117047285 is about 489.1632045715.

Adding to 117047285 its reverse (582740711), we get a palindrome (699787996).

The spelling of 117047285 in words is "one hundred seventeen million, forty-seven thousand, two hundred eighty-five".