117485287 has 4 divisors (see below), whose sum is σ = 118410496. Its totient is φ = 116560080.

The previous prime is 117485279. The next prime is 117485297. The reversal of 117485287 is 782584711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117485287 - 2³ = 117485279 is a prime.

It is a super-2 number, since 2×117485287² = 27605585322944738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117485267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462414 + ... + 462667.

It is an arithmetic number, because the mean of its divisors is an integer number (29602624).

Almost surely, 2^117485287 is an apocalyptic number.

117485287 is a deficient number, since it is larger than the sum of its proper divisors (925209).

117485287 is an equidigital number, since it uses as much as digits as its factorization.

117485287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925208.

The product of its digits is 125440, while the sum is 43.

The square root of 117485287 is about 10839.0630130099. The cubic root of 117485287 is about 489.7726100287.

The spelling of 117485287 in words is "one hundred seventeen million, four hundred eighty-five thousand, two hundred eighty-seven".