117451517 has 4 divisors (see below), whose sum is σ = 117779040. Its totient is φ = 117123996.

The previous prime is 117451507. The next prime is 117451549. The reversal of 117451517 is 715154711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 715154711 = 181 ⋅3951131.

It is a cyclic number.

It is not a de Polignac number, because 117451517 - 2¹⁶ = 117385981 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 (117451507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163223 + ... + 163940.

It is an arithmetic number, because the mean of its divisors is an integer number (29444760).

Almost surely, 2^117451517 is an apocalyptic number.

It is an amenable number.

117451517 is a deficient number, since it is larger than the sum of its proper divisors (327523).

117451517 is an equidigital number, since it uses as much as digits as its factorization.

117451517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327522.

The product of its digits is 4900, while the sum is 32.

The square root of 117451517 is about 10837.5051095720. The cubic root of 117451517 is about 489.7256787449.

The spelling of 117451517 in words is "one hundred seventeen million, four hundred fifty-one thousand, five hundred seventeen".