117185015 has 4 divisors (see below), whose sum is σ = 140622024. Its totient is φ = 93748008.

The previous prime is 117184997. The next prime is 117185017. The reversal of 117185015 is 510581711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510581711 = 6563 ⋅77797.

It is a cyclic number.

It is not a de Polignac number, because 117185015 - 2¹⁰ = 117183991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117185017) 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, 11718497 + ... + 11718506.

It is an arithmetic number, because the mean of its divisors is an integer number (35155506).

Almost surely, 2^117185015 is an apocalyptic number.

117185015 is a deficient number, since it is larger than the sum of its proper divisors (23437009).

117185015 is an equidigital number, since it uses as much as digits as its factorization.

117185015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23437008.

The product of its (nonzero) digits is 1400, while the sum is 29.

The square root of 117185015 is about 10825.2027694635. The cubic root of 117185015 is about 489.3549961186.

The spelling of 117185015 in words is "one hundred seventeen million, one hundred eighty-five thousand, fifteen".